diff --git a/oaipmh-core/pom.xml b/oaipmh-core/pom.xml
index 3c1496db96251ef948a2712a3a4acf9354e1ed33..1eaad533fe55aaee06906fa364068a1036ac4f8d 100644
--- a/oaipmh-core/pom.xml
+++ b/oaipmh-core/pom.xml
@@ -171,9 +171,33 @@
 				</executions>
 			</plugin>
 			<plugin>
+<!-- We use this plugin to ensure that our usage of the
+maven-jaxb2-plugin is JDK 8 compatible in absence of a fix
+for https://java.net/jira/browse/MAVEN_JAXB2_PLUGIN-80. -->
+    <groupId>org.codehaus.mojo</groupId>
+    <artifactId>properties-maven-plugin</artifactId>
+    <version>1.0-alpha-2</version>
+    <executions>
+        <execution>
+            <id>set-additional-system-properties</id>
+            <goals>
+                <goal>set-system-properties</goal>
+            </goals>
+        </execution>
+    </executions>
+    <configuration>
+        <properties>
+            <property>
+                <name>javax.xml.accessExternalSchema</name>
+                <value>file,http</value>
+            </property>
+        </properties>
+    </configuration>
+</plugin>
+			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>jaxb2-maven-plugin</artifactId>
-				<version>1.5</version>
+				<version>2.4</version>
 				<executions>
 					<execution>
 						<id>oaipmhDCSchema-xjc</id>
@@ -185,11 +209,7 @@
 							<packageName>info.textgrid.middleware.oaidc</packageName>
 							<schemaDirectory>src/main/xsd</schemaDirectory>
 							<schemaIncludes>
-								<include>simpledc20020312.xsd</include>
-								<include>xml.xsd</include>
 								<include>oai_dc.xsd</include>
-								<include>XMLSchema.dtd</include>
-								<include>datatypes.dtd</include>
 							</schemaIncludes>
 							<generateDirectory>${project.build.directory}/generated-sources/xjc1</generateDirectory>
 							<staleFile>${project.build.directory}/jaxb2/.oaiDCSchemaXjcStaleFlag</staleFile>
diff --git a/oaipmh-core/src/main/xsd/XMLSchema.dtd b/oaipmh-core/src/main/xsd/XMLSchema.dtd
deleted file mode 100644
index bbc0aa688b9e83b178a2c56af7a928d1aa375473..0000000000000000000000000000000000000000
--- a/oaipmh-core/src/main/xsd/XMLSchema.dtd
+++ /dev/null
@@ -1,403 +0,0 @@
-
-<!-- DTD for XML Schemas: Part 1: Structures
-     Public Identifier: "-//W3C//DTD XMLSCHEMA 200102//EN"
-     Official Location: http://www.w3.org/2001/XMLSchema.dtd -->
-<!-- $Id: XMLSchema.dtd,v 1.31 2001/10/24 15:50:16 ht Exp $ -->
-<!-- Note this DTD is NOT normative, or even definitive. -->           <!--d-->
-<!-- prose copy in the structures REC is the definitive version -->    <!--d-->
-<!-- (which shouldn't differ from this one except for this -->         <!--d-->
-<!-- comment and entity expansions, but just in case) -->              <!--d-->
-<!-- With the exception of cases with multiple namespace
-     prefixes for the XML Schema namespace, any XML document which is
-     not valid per this DTD given redefinitions in its internal subset of the
-     'p' and 's' parameter entities below appropriate to its namespace
-     declaration of the XML Schema namespace is almost certainly not
-     a valid schema. -->
-
-<!-- The simpleType element and its constituent parts
-     are defined in XML Schema: Part 2: Datatypes -->
-<!ENTITY % xs-datatypes PUBLIC 'datatypes' 'datatypes.dtd' >
-
-<!ENTITY % p 'xs:'> <!-- can be overriden in the internal subset of a
-                         schema document to establish a different
-                         namespace prefix -->
-<!ENTITY % s ':xs'> <!-- if %p is defined (e.g. as foo:) then you must
-                         also define %s as the suffix for the appropriate
-                         namespace declaration (e.g. :foo) -->
-<!ENTITY % nds 'xmlns%s;'>
-
-<!-- Define all the element names, with optional prefix -->
-<!ENTITY % schema "%p;schema">
-<!ENTITY % complexType "%p;complexType">
-<!ENTITY % complexContent "%p;complexContent">
-<!ENTITY % simpleContent "%p;simpleContent">
-<!ENTITY % extension "%p;extension">
-<!ENTITY % element "%p;element">
-<!ENTITY % unique "%p;unique">
-<!ENTITY % key "%p;key">
-<!ENTITY % keyref "%p;keyref">
-<!ENTITY % selector "%p;selector">
-<!ENTITY % field "%p;field">
-<!ENTITY % group "%p;group">
-<!ENTITY % all "%p;all">
-<!ENTITY % choice "%p;choice">
-<!ENTITY % sequence "%p;sequence">
-<!ENTITY % any "%p;any">
-<!ENTITY % anyAttribute "%p;anyAttribute">
-<!ENTITY % attribute "%p;attribute">
-<!ENTITY % attributeGroup "%p;attributeGroup">
-<!ENTITY % include "%p;include">
-<!ENTITY % import "%p;import">
-<!ENTITY % redefine "%p;redefine">
-<!ENTITY % notation "%p;notation">
-
-<!-- annotation elements -->
-<!ENTITY % annotation "%p;annotation">
-<!ENTITY % appinfo "%p;appinfo">
-<!ENTITY % documentation "%p;documentation">
-
-<!-- Customisation entities for the ATTLIST of each element type.
-     Define one of these if your schema takes advantage of the
-     anyAttribute='##other' in the schema for schemas -->
-
-<!ENTITY % schemaAttrs ''>
-<!ENTITY % complexTypeAttrs ''>
-<!ENTITY % complexContentAttrs ''>
-<!ENTITY % simpleContentAttrs ''>
-<!ENTITY % extensionAttrs ''>
-<!ENTITY % elementAttrs ''>
-<!ENTITY % groupAttrs ''>
-<!ENTITY % allAttrs ''>
-<!ENTITY % choiceAttrs ''>
-<!ENTITY % sequenceAttrs ''>
-<!ENTITY % anyAttrs ''>
-<!ENTITY % anyAttributeAttrs ''>
-<!ENTITY % attributeAttrs ''>
-<!ENTITY % attributeGroupAttrs ''>
-<!ENTITY % uniqueAttrs ''>
-<!ENTITY % keyAttrs ''>
-<!ENTITY % keyrefAttrs ''>
-<!ENTITY % selectorAttrs ''>
-<!ENTITY % fieldAttrs ''>
-<!ENTITY % includeAttrs ''>
-<!ENTITY % importAttrs ''>
-<!ENTITY % redefineAttrs ''>
-<!ENTITY % notationAttrs ''>
-<!ENTITY % annotationAttrs ''>
-<!ENTITY % appinfoAttrs ''>
-<!ENTITY % documentationAttrs ''>
-
-<!ENTITY % complexDerivationSet "CDATA">
-      <!-- #all or space-separated list drawn from derivationChoice -->
-<!ENTITY % blockSet "CDATA">
-      <!-- #all or space-separated list drawn from
-                      derivationChoice + 'substitution' -->
-
-<!ENTITY % mgs '%all; | %choice; | %sequence;'>
-<!ENTITY % cs '%choice; | %sequence;'>
-<!ENTITY % formValues '(qualified|unqualified)'>
-
-
-<!ENTITY % attrDecls    '((%attribute;| %attributeGroup;)*,(%anyAttribute;)?)'>
-
-<!ENTITY % particleAndAttrs '((%mgs; | %group;)?, %attrDecls;)'>
-
-<!-- This is used in part2 -->
-<!ENTITY % restriction1 '((%mgs; | %group;)?)'>
-
-%xs-datatypes;
-
-<!-- the duplication below is to produce an unambiguous content model
-     which allows annotation everywhere -->
-<!ELEMENT %schema; ((%include; | %import; | %redefine; | %annotation;)*,
-                    ((%simpleType; | %complexType;
-                      | %element; | %attribute;
-                      | %attributeGroup; | %group;
-                      | %notation; ),
-                     (%annotation;)*)* )>
-<!ATTLIST %schema;
-   targetNamespace      %URIref;               #IMPLIED
-   version              CDATA                  #IMPLIED
-   %nds;                %URIref;               #FIXED 'http://www.w3.org/2001/XMLSchema'
-   xmlns                CDATA                  #IMPLIED
-   finalDefault         %complexDerivationSet; ''
-   blockDefault         %blockSet;             ''
-   id                   ID                     #IMPLIED
-   elementFormDefault   %formValues;           'unqualified'
-   attributeFormDefault %formValues;           'unqualified'
-   xml:lang             CDATA                  #IMPLIED
-   %schemaAttrs;>
-<!-- Note the xmlns declaration is NOT in the Schema for Schemas,
-     because at the Infoset level where schemas operate,
-     xmlns(:prefix) is NOT an attribute! -->
-<!-- The declaration of xmlns is a convenience for schema authors -->
- 
-<!-- The id attribute here and below is for use in external references
-     from non-schemas using simple fragment identifiers.
-     It is NOT used for schema-to-schema reference, internal or
-     external. -->
-
-<!-- a type is a named content type specification which allows attribute
-     declarations-->
-<!-- -->
-
-<!ELEMENT %complexType; ((%annotation;)?,
-                         (%simpleContent;|%complexContent;|
-                          %particleAndAttrs;))>
-
-<!ATTLIST %complexType;
-          name      %NCName;                        #IMPLIED
-          id        ID                              #IMPLIED
-          abstract  %boolean;                       #IMPLIED
-          final     %complexDerivationSet;          #IMPLIED
-          block     %complexDerivationSet;          #IMPLIED
-          mixed (true|false) 'false'
-          %complexTypeAttrs;>
-
-<!-- particleAndAttrs is shorthand for a root type -->
-<!-- mixed is disallowed if simpleContent, overriden if complexContent
-     has one too. -->
-
-<!-- If anyAttribute appears in one or more referenced attributeGroups
-     and/or explicitly, the intersection of the permissions is used -->
-
-<!ELEMENT %complexContent; ((%annotation;)?, (%restriction;|%extension;))>
-<!ATTLIST %complexContent;
-          mixed (true|false) #IMPLIED
-          id    ID           #IMPLIED
-          %complexContentAttrs;>
-
-<!-- restriction should use the branch defined above, not the simple
-     one from part2; extension should use the full model  -->
-
-<!ELEMENT %simpleContent; ((%annotation;)?, (%restriction;|%extension;))>
-<!ATTLIST %simpleContent;
-          id    ID           #IMPLIED
-          %simpleContentAttrs;>
-
-<!-- restriction should use the simple branch from part2, not the 
-     one defined above; extension should have no particle  -->
-
-<!ELEMENT %extension; ((%annotation;)?, (%particleAndAttrs;))>
-<!ATTLIST %extension;
-          base  %QName;      #REQUIRED
-          id    ID           #IMPLIED
-          %extensionAttrs;>
-
-<!-- an element is declared by either:
- a name and a type (either nested or referenced via the type attribute)
- or a ref to an existing element declaration -->
-
-<!ELEMENT %element; ((%annotation;)?, (%complexType;| %simpleType;)?,
-                     (%unique; | %key; | %keyref;)*)>
-<!-- simpleType or complexType only if no type|ref attribute -->
-<!-- ref not allowed at top level -->
-<!ATTLIST %element;
-            name               %NCName;               #IMPLIED
-            id                 ID                     #IMPLIED
-            ref                %QName;                #IMPLIED
-            type               %QName;                #IMPLIED
-            minOccurs          %nonNegativeInteger;   #IMPLIED
-            maxOccurs          CDATA                  #IMPLIED
-            nillable           %boolean;              #IMPLIED
-            substitutionGroup  %QName;                #IMPLIED
-            abstract           %boolean;              #IMPLIED
-            final              %complexDerivationSet; #IMPLIED
-            block              %blockSet;             #IMPLIED
-            default            CDATA                  #IMPLIED
-            fixed              CDATA                  #IMPLIED
-            form               %formValues;           #IMPLIED
-            %elementAttrs;>
-<!-- type and ref are mutually exclusive.
-     name and ref are mutually exclusive, one is required -->
-<!-- In the absence of type AND ref, type defaults to type of
-     substitutionGroup, if any, else the ur-type, i.e. unconstrained -->
-<!-- default and fixed are mutually exclusive -->
-
-<!ELEMENT %group; ((%annotation;)?,(%mgs;)?)>
-<!ATTLIST %group; 
-          name        %NCName;               #IMPLIED
-          ref         %QName;                #IMPLIED
-          minOccurs   %nonNegativeInteger;   #IMPLIED
-          maxOccurs   CDATA                  #IMPLIED
-          id          ID                     #IMPLIED
-          %groupAttrs;>
-
-<!ELEMENT %all; ((%annotation;)?, (%element;)*)>
-<!ATTLIST %all;
-          minOccurs   (1)                    #IMPLIED
-          maxOccurs   (1)                    #IMPLIED
-          id          ID                     #IMPLIED
-          %allAttrs;>
-
-<!ELEMENT %choice; ((%annotation;)?, (%element;| %group;| %cs; | %any;)*)>
-<!ATTLIST %choice;
-          minOccurs   %nonNegativeInteger;   #IMPLIED
-          maxOccurs   CDATA                  #IMPLIED
-          id          ID                     #IMPLIED
-          %choiceAttrs;>
-
-<!ELEMENT %sequence; ((%annotation;)?, (%element;| %group;| %cs; | %any;)*)>
-<!ATTLIST %sequence;
-          minOccurs   %nonNegativeInteger;   #IMPLIED
-          maxOccurs   CDATA                  #IMPLIED
-          id          ID                     #IMPLIED
-          %sequenceAttrs;>
-
-<!-- an anonymous grouping in a model, or
-     a top-level named group definition, or a reference to same -->
-
-<!-- Note that if order is 'all', group is not allowed inside.
-     If order is 'all' THIS group must be alone (or referenced alone) at
-     the top level of a content model -->
-<!-- If order is 'all', minOccurs==maxOccurs==1 on element/any inside -->
-<!-- Should allow minOccurs=0 inside order='all' . . . -->
-
-<!ELEMENT %any; (%annotation;)?>
-<!ATTLIST %any;
-            namespace       CDATA                  '##any'
-            processContents (skip|lax|strict)      'strict'
-            minOccurs       %nonNegativeInteger;   '1'
-            maxOccurs       CDATA                  '1'
-            id              ID                     #IMPLIED
-            %anyAttrs;>
-
-<!-- namespace is interpreted as follows:
-                  ##any      - - any non-conflicting WFXML at all
-
-                  ##other    - - any non-conflicting WFXML from namespace other
-                                  than targetNamespace
-
-                  ##local    - - any unqualified non-conflicting WFXML/attribute
-                  one or     - - any non-conflicting WFXML from
-                  more URI        the listed namespaces
-                  references
-
-                  ##targetNamespace ##local may appear in the above list,
-                    with the obvious meaning -->
-
-<!ELEMENT %anyAttribute; (%annotation;)?>
-<!ATTLIST %anyAttribute;
-            namespace       CDATA              '##any'
-            processContents (skip|lax|strict)  'strict'
-            id              ID                 #IMPLIED
-            %anyAttributeAttrs;>
-<!-- namespace is interpreted as for 'any' above -->
-
-<!-- simpleType only if no type|ref attribute -->
-<!-- ref not allowed at top level, name iff at top level -->
-<!ELEMENT %attribute; ((%annotation;)?, (%simpleType;)?)>
-<!ATTLIST %attribute;
-          name      %NCName;      #IMPLIED
-          id        ID            #IMPLIED
-          ref       %QName;       #IMPLIED
-          type      %QName;       #IMPLIED
-          use       (prohibited|optional|required) #IMPLIED
-          default   CDATA         #IMPLIED
-          fixed     CDATA         #IMPLIED
-          form      %formValues;  #IMPLIED
-          %attributeAttrs;>
-<!-- type and ref are mutually exclusive.
-     name and ref are mutually exclusive, one is required -->
-<!-- default for use is optional when nested, none otherwise -->
-<!-- default and fixed are mutually exclusive -->
-<!-- type attr and simpleType content are mutually exclusive -->
-
-<!-- an attributeGroup is a named collection of attribute decls, or a
-     reference thereto -->
-<!ELEMENT %attributeGroup; ((%annotation;)?,
-                       (%attribute; | %attributeGroup;)*,
-                       (%anyAttribute;)?) >
-<!ATTLIST %attributeGroup;
-                 name       %NCName;       #IMPLIED
-                 id         ID             #IMPLIED
-                 ref        %QName;        #IMPLIED
-                 %attributeGroupAttrs;>
-
-<!-- ref iff no content, no name.  ref iff not top level -->
-
-<!-- better reference mechanisms -->
-<!ELEMENT %unique; ((%annotation;)?, %selector;, (%field;)+)>
-<!ATTLIST %unique;
-          name     %NCName;       #REQUIRED
-	  id       ID             #IMPLIED
-	  %uniqueAttrs;>
-
-<!ELEMENT %key;    ((%annotation;)?, %selector;, (%field;)+)>
-<!ATTLIST %key;
-          name     %NCName;       #REQUIRED
-	  id       ID             #IMPLIED
-	  %keyAttrs;>
-
-<!ELEMENT %keyref; ((%annotation;)?, %selector;, (%field;)+)>
-<!ATTLIST %keyref;
-          name     %NCName;       #REQUIRED
-	  refer    %QName;        #REQUIRED
-	  id       ID             #IMPLIED
-	  %keyrefAttrs;>
-
-<!ELEMENT %selector; ((%annotation;)?)>
-<!ATTLIST %selector;
-          xpath %XPathExpr; #REQUIRED
-          id    ID          #IMPLIED
-          %selectorAttrs;>
-<!ELEMENT %field; ((%annotation;)?)>
-<!ATTLIST %field;
-          xpath %XPathExpr; #REQUIRED
-          id    ID          #IMPLIED
-          %fieldAttrs;>
-
-<!-- Schema combination mechanisms -->
-<!ELEMENT %include; (%annotation;)?>
-<!ATTLIST %include;
-          schemaLocation %URIref; #REQUIRED
-          id             ID       #IMPLIED
-          %includeAttrs;>
-
-<!ELEMENT %import; (%annotation;)?>
-<!ATTLIST %import;
-          namespace      %URIref; #IMPLIED
-          schemaLocation %URIref; #IMPLIED
-          id             ID       #IMPLIED
-          %importAttrs;>
-
-<!ELEMENT %redefine; (%annotation; | %simpleType; | %complexType; |
-                      %attributeGroup; | %group;)*>
-<!ATTLIST %redefine;
-          schemaLocation %URIref; #REQUIRED
-          id             ID       #IMPLIED
-          %redefineAttrs;>
-
-<!ELEMENT %notation; (%annotation;)?>
-<!ATTLIST %notation;
-	  name        %NCName;    #REQUIRED
-	  id          ID          #IMPLIED
-	  public      CDATA       #REQUIRED
-	  system      %URIref;    #IMPLIED
-	  %notationAttrs;>
-
-<!-- Annotation is either application information or documentation -->
-<!-- By having these here they are available for datatypes as well
-     as all the structures elements -->
-
-<!ELEMENT %annotation; (%appinfo; | %documentation;)*>
-<!ATTLIST %annotation; %annotationAttrs;>
-
-<!-- User must define annotation elements in internal subset for this
-     to work -->
-<!ELEMENT %appinfo; ANY>   <!-- too restrictive -->
-<!ATTLIST %appinfo;
-          source     %URIref;      #IMPLIED
-          id         ID         #IMPLIED
-          %appinfoAttrs;>
-<!ELEMENT %documentation; ANY>   <!-- too restrictive -->
-<!ATTLIST %documentation;
-          source     %URIref;   #IMPLIED
-          id         ID         #IMPLIED
-          xml:lang   CDATA      #IMPLIED
-          %documentationAttrs;>
-
-<!NOTATION XMLSchemaStructures PUBLIC
-           'structures' 'http://www.w3.org/2001/XMLSchema.xsd' >
-<!NOTATION XML PUBLIC
-           'REC-xml-1998-0210' 'http://www.w3.org/TR/1998/REC-xml-19980210' >
diff --git a/oaipmh-core/src/main/xsd/datatypes.dtd b/oaipmh-core/src/main/xsd/datatypes.dtd
deleted file mode 100644
index f4ad4c6f4bd24f12f3a879012d43bf892671e89b..0000000000000000000000000000000000000000
--- a/oaipmh-core/src/main/xsd/datatypes.dtd
+++ /dev/null
@@ -1,204 +0,0 @@
-
-<!--
-        DTD for XML Schemas: Part 2: Datatypes
-        $Id: datatypes.dtd,v 1.23 2001/03/16 17:36:30 ht Exp $
-        Note this DTD is NOT normative, or even definitive. - - the
-        prose copy in the datatypes REC is the definitive version
-        (which shouldn't differ from this one except for this comment
-        and entity expansions, but just in case)
-  -->
-
-<!--
-        This DTD cannot be used on its own, it is intended
-        only for incorporation in XMLSchema.dtd, q.v.
-  -->
-
-<!-- Define all the element names, with optional prefix -->
-<!ENTITY % simpleType "%p;simpleType">
-<!ENTITY % restriction "%p;restriction">
-<!ENTITY % list "%p;list">
-<!ENTITY % union "%p;union">
-<!ENTITY % maxExclusive "%p;maxExclusive">
-<!ENTITY % minExclusive "%p;minExclusive">
-<!ENTITY % maxInclusive "%p;maxInclusive">
-<!ENTITY % minInclusive "%p;minInclusive">
-<!ENTITY % totalDigits "%p;totalDigits">
-<!ENTITY % fractionDigits "%p;fractionDigits">
-<!ENTITY % length "%p;length">
-<!ENTITY % minLength "%p;minLength">
-<!ENTITY % maxLength "%p;maxLength">
-<!ENTITY % enumeration "%p;enumeration">
-<!ENTITY % whiteSpace "%p;whiteSpace">
-<!ENTITY % pattern "%p;pattern">
-
-<!--
-        Customisation entities for the ATTLIST of each element
-        type. Define one of these if your schema takes advantage
-        of the anyAttribute='##other' in the schema for schemas
-  -->
-
-<!ENTITY % simpleTypeAttrs "">
-<!ENTITY % restrictionAttrs "">
-<!ENTITY % listAttrs "">
-<!ENTITY % unionAttrs "">
-<!ENTITY % maxExclusiveAttrs "">
-<!ENTITY % minExclusiveAttrs "">
-<!ENTITY % maxInclusiveAttrs "">
-<!ENTITY % minInclusiveAttrs "">
-<!ENTITY % totalDigitsAttrs "">
-<!ENTITY % fractionDigitsAttrs "">
-<!ENTITY % lengthAttrs "">
-<!ENTITY % minLengthAttrs "">
-<!ENTITY % maxLengthAttrs "">
-<!ENTITY % enumerationAttrs "">
-<!ENTITY % whiteSpaceAttrs "">
-<!ENTITY % patternAttrs "">
-
-<!-- Define some entities for informative use as attribute
-        types -->
-<!ENTITY % URIref "CDATA">
-<!ENTITY % XPathExpr "CDATA">
-<!ENTITY % QName "NMTOKEN">
-<!ENTITY % QNames "NMTOKENS">
-<!ENTITY % NCName "NMTOKEN">
-<!ENTITY % nonNegativeInteger "NMTOKEN">
-<!ENTITY % boolean "(true|false)">
-<!ENTITY % simpleDerivationSet "CDATA">
-<!--
-        #all or space-separated list drawn from derivationChoice
-  -->
-
-<!--
-        Note that the use of 'facet' below is less restrictive
-        than is really intended:  There should in fact be no
-        more than one of each of minInclusive, minExclusive,
-        maxInclusive, maxExclusive, totalDigits, fractionDigits,
-        length, maxLength, minLength within datatype,
-        and the min- and max- variants of Inclusive and Exclusive
-        are mutually exclusive. On the other hand,  pattern and
-        enumeration may repeat.
-  -->
-<!ENTITY % minBound "(%minInclusive; | %minExclusive;)">
-<!ENTITY % maxBound "(%maxInclusive; | %maxExclusive;)">
-<!ENTITY % bounds "%minBound; | %maxBound;">
-<!ENTITY % numeric "%totalDigits; | %fractionDigits;">
-<!ENTITY % ordered "%bounds; | %numeric;">
-<!ENTITY % unordered
-   "%pattern; | %enumeration; | %whiteSpace; | %length; |
-   %maxLength; | %minLength;">
-<!ENTITY % facet "%ordered; | %unordered;">
-<!ENTITY % facetAttr 
-        "value CDATA #REQUIRED
-        id ID #IMPLIED">
-<!ENTITY % fixedAttr "fixed %boolean; #IMPLIED">
-<!ENTITY % facetModel "(%annotation;)?">
-<!ELEMENT %simpleType;
-        ((%annotation;)?, (%restriction; | %list; | %union;))>
-<!ATTLIST %simpleType;
-    name      %NCName; #IMPLIED
-    final     %simpleDerivationSet; #IMPLIED
-    id        ID       #IMPLIED
-    %simpleTypeAttrs;>
-<!-- name is required at top level -->
-<!ELEMENT %restriction; ((%annotation;)?,
-                         (%restriction1; |
-                          ((%simpleType;)?,(%facet;)*)),
-                         (%attrDecls;))>
-<!ATTLIST %restriction;
-    base      %QName;                  #IMPLIED
-    id        ID       #IMPLIED
-    %restrictionAttrs;>
-<!--
-        base and simpleType child are mutually exclusive,
-        one is required.
-
-        restriction is shared between simpleType and
-        simpleContent and complexContent (in XMLSchema.xsd).
-        restriction1 is for the latter cases, when this
-        is restricting a complex type, as is attrDecls.
-  -->
-<!ELEMENT %list; ((%annotation;)?,(%simpleType;)?)>
-<!ATTLIST %list;
-    itemType      %QName;             #IMPLIED
-    id        ID       #IMPLIED
-    %listAttrs;>
-<!--
-        itemType and simpleType child are mutually exclusive,
-        one is required
-  -->
-<!ELEMENT %union; ((%annotation;)?,(%simpleType;)*)>
-<!ATTLIST %union;
-    id            ID       #IMPLIED
-    memberTypes   %QNames;            #IMPLIED
-    %unionAttrs;>
-<!--
-        At least one item in memberTypes or one simpleType
-        child is required
-  -->
-
-<!ELEMENT %maxExclusive; %facetModel;>
-<!ATTLIST %maxExclusive;
-        %facetAttr;
-        %fixedAttr;
-        %maxExclusiveAttrs;>
-<!ELEMENT %minExclusive; %facetModel;>
-<!ATTLIST %minExclusive;
-        %facetAttr;
-        %fixedAttr;
-        %minExclusiveAttrs;>
-
-<!ELEMENT %maxInclusive; %facetModel;>
-<!ATTLIST %maxInclusive;
-        %facetAttr;
-        %fixedAttr;
-        %maxInclusiveAttrs;>
-<!ELEMENT %minInclusive; %facetModel;>
-<!ATTLIST %minInclusive;
-        %facetAttr;
-        %fixedAttr;
-        %minInclusiveAttrs;>
-
-<!ELEMENT %totalDigits; %facetModel;>
-<!ATTLIST %totalDigits;
-        %facetAttr;
-        %fixedAttr;
-        %totalDigitsAttrs;>
-<!ELEMENT %fractionDigits; %facetModel;>
-<!ATTLIST %fractionDigits;
-        %facetAttr;
-        %fixedAttr;
-        %fractionDigitsAttrs;>
-
-<!ELEMENT %length; %facetModel;>
-<!ATTLIST %length;
-        %facetAttr;
-        %fixedAttr;
-        %lengthAttrs;>
-<!ELEMENT %minLength; %facetModel;>
-<!ATTLIST %minLength;
-        %facetAttr;
-        %fixedAttr;
-        %minLengthAttrs;>
-<!ELEMENT %maxLength; %facetModel;>
-<!ATTLIST %maxLength;
-        %facetAttr;
-        %fixedAttr;
-        %maxLengthAttrs;>
-
-<!-- This one can be repeated -->
-<!ELEMENT %enumeration; %facetModel;>
-<!ATTLIST %enumeration;
-        %facetAttr;
-        %enumerationAttrs;>
-
-<!ELEMENT %whiteSpace; %facetModel;>
-<!ATTLIST %whiteSpace;
-        %facetAttr;
-        %fixedAttr;
-        %whiteSpaceAttrs;>
-
-<!-- This one can be repeated -->
-<!ELEMENT %pattern; %facetModel;>
-<!ATTLIST %pattern;
-        %facetAttr;
-        %patternAttrs;>
diff --git a/oaipmh-core/src/main/xsd/simpledc20021212.xsd b/oaipmh-core/src/main/xsd/simpledc20021212.xsd
deleted file mode 100644
index f24b24294c71dafb051e15c1b2ba0a34b8fe8fc4..0000000000000000000000000000000000000000
--- a/oaipmh-core/src/main/xsd/simpledc20021212.xsd
+++ /dev/null
@@ -1,76 +0,0 @@
-<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
-    xmlns="http://purl.org/dc/elements/1.1/"
-    targetNamespace="http://purl.org/dc/elements/1.1/"
-    elementFormDefault="qualified"
-    attributeFormDefault="unqualified">
-    
-    <xs:annotation>
-        <xs:documentation xml:lang="en">
-            Simple DC XML Schema, 2002-10-09
-            by Pete Johnston (p.johnston@ukoln.ac.uk),
-            Carl Lagoze (lagoze@cs.cornell.edu), Andy Powell (a.powell@ukoln.ac.uk),
-            Herbert Van de Sompel (hvdsomp@yahoo.com).
-            This schema defines terms for Simple Dublin Core, i.e. the 15
-            elements from the http://purl.org/dc/elements/1.1/ namespace, with
-            no use of encoding schemes or element refinements.
-            Default content type for all elements is xs:string with xml:lang
-            attribute available.
-            
-            Supercedes version of 2002-03-12. 
-            Amended to remove namespace declaration for http://www.w3.org/XML/1998/namespace namespace,
-            and to reference lang attribute via built-in xml: namespace prefix.
-            xs:appinfo also removed.
-        </xs:documentation>
-    </xs:annotation>
-    
-    <xs:import namespace="https://www.w3.org/XML/1998/namespace"
-        schemaLocation="https://www.w3.org/2001/03/xml.xsd">
-    </xs:import>
-    
-    <xs:element name="title" type="elementType"/>
-    <xs:element name="creator" type="elementType"/>
-    <xs:element name="subject" type="elementType"/>
-    <xs:element name="description" type="elementType"/>
-    <xs:element name="publisher" type="elementType"/>
-    <xs:element name="contributor" type="elementType"/>
-    <xs:element name="date" type="elementType"/>
-    <xs:element name="type" type="elementType"/>
-    <xs:element name="format" type="elementType"/>
-    <xs:element name="identifier" type="elementType"/>
-    <xs:element name="source" type="elementType"/>
-    <xs:element name="language" type="elementType"/>
-    <xs:element name="relation" type="elementType"/>
-    <xs:element name="coverage" type="elementType"/>
-    <xs:element name="rights" type="elementType"/>
-    
-    <xs:group name="elementsGroup">
-        <xs:sequence>
-            <xs:choice minOccurs="0" maxOccurs="unbounded">
-                <xs:element ref="title"/>
-                <xs:element ref="creator"/>
-                <xs:element ref="subject"/>
-                <xs:element ref="description"/>
-                <xs:element ref="publisher"/>
-                <xs:element ref="contributor"/>
-                <xs:element ref="date"/>
-                <xs:element ref="type"/>
-                <xs:element ref="format"/>
-                <xs:element ref="identifier"/>
-                <xs:element ref="source"/>
-                <xs:element ref="language"/>
-                <xs:element ref="relation"/>
-                <xs:element ref="coverage"/>
-                <xs:element ref="rights"/>
-            </xs:choice>
-        </xs:sequence>
-    </xs:group>
-    
-    <xs:complexType name="elementType">
-        <xs:simpleContent>
-            <xs:extension base="xs:string">
-                <xs:attribute ref="xml:lang" use="optional"/>
-            </xs:extension>
-        </xs:simpleContent>
-    </xs:complexType>
-    
-</xs:schema>
\ No newline at end of file
diff --git a/oaipmh-core/src/main/xsd/xml.xsd b/oaipmh-core/src/main/xsd/xml.xsd
deleted file mode 100644
index 1568cee8157de4cf6663e9abf1bd4df7b0264768..0000000000000000000000000000000000000000
--- a/oaipmh-core/src/main/xsd/xml.xsd
+++ /dev/null
@@ -1,117 +0,0 @@
-<?xml version='1.0'?>
-<!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd" >
-<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en">
-    
-    <xs:annotation>
-        <xs:documentation>
-            See http://www.w3.org/XML/1998/namespace.html and
-            http://www.w3.org/TR/REC-xml for information about this namespace.
-            
-            This schema document describes the XML namespace, in a form
-            suitable for import by other schema documents.  
-            
-            Note that local names in this namespace are intended to be defined
-            only by the World Wide Web Consortium or its subgroups.  The
-            following names are currently defined in this namespace and should
-            not be used with conflicting semantics by any Working Group,
-            specification, or document instance:
-            
-            base (as an attribute name): denotes an attribute whose value
-            provides a URI to be used as the base for interpreting any
-            relative URIs in the scope of the element on which it
-            appears; its value is inherited.  This name is reserved
-            by virtue of its definition in the XML Base specification.
-            
-            lang (as an attribute name): denotes an attribute whose value
-            is a language code for the natural language of the content of
-            any element; its value is inherited.  This name is reserved
-            by virtue of its definition in the XML specification.
-            
-            space (as an attribute name): denotes an attribute whose
-            value is a keyword indicating what whitespace processing
-            discipline is intended for the content of the element; its
-            value is inherited.  This name is reserved by virtue of its
-            definition in the XML specification.
-            
-            Father (in any context at all): denotes Jon Bosak, the chair of 
-            the original XML Working Group.  This name is reserved by 
-            the following decision of the W3C XML Plenary and 
-            XML Coordination groups:
-            
-            In appreciation for his vision, leadership and dedication
-            the W3C XML Plenary on this 10th day of February, 2000
-            reserves for Jon Bosak in perpetuity the XML name
-            xml:Father
-        </xs:documentation>
-    </xs:annotation>
-    
-    <xs:annotation>
-        <xs:documentation>This schema defines attributes and an attribute group
-            suitable for use by
-            schemas wishing to allow xml:base, xml:lang or xml:space attributes
-            on elements they define.
-            
-            To enable this, such a schema must import this schema
-            for the XML namespace, e.g. as follows:
-            &lt;schema . . .>
-            . . .
-            &lt;import namespace="http://www.w3.org/XML/1998/namespace"
-            schemaLocation="http://www.w3.org/2001/03/xml.xsd"/>
-            
-            Subsequently, qualified reference to any of the attributes
-            or the group defined below will have the desired effect, e.g.
-            
-            &lt;type . . .>
-            . . .
-            &lt;attributeGroup ref="xml:specialAttrs"/>
-            
-            will define a type which will schema-validate an instance
-            element with any of those attributes</xs:documentation>
-    </xs:annotation>
-    
-    <xs:annotation>
-        <xs:documentation>In keeping with the XML Schema WG's standard versioning
-            policy, this schema document will persist at
-            http://www.w3.org/2001/03/xml.xsd.
-            At the date of issue it can also be found at
-            http://www.w3.org/2001/xml.xsd.
-            The schema document at that URI may however change in the future,
-            in order to remain compatible with the latest version of XML Schema
-            itself.  In other words, if the XML Schema namespace changes, the version
-            of this document at
-            http://www.w3.org/2001/xml.xsd will change
-            accordingly; the version at
-            http://www.w3.org/2001/03/xml.xsd will not change.
-        </xs:documentation>
-    </xs:annotation>
-    
-    <xs:attribute name="lang" type="xs:language">
-        <xs:annotation>
-            <xs:documentation>In due course, we should install the relevant ISO 2- and 3-letter
-                codes as the enumerated possible values . . .</xs:documentation>
-        </xs:annotation>
-    </xs:attribute>
-    
-    <xs:attribute name="space" default="preserve">
-        <xs:simpleType>
-            <xs:restriction base="xs:NCName">
-                <xs:enumeration value="default"/>
-                <xs:enumeration value="preserve"/>
-            </xs:restriction>
-        </xs:simpleType>
-    </xs:attribute>
-    
-    <xs:attribute name="base" type="xs:anyURI">
-        <xs:annotation>
-            <xs:documentation>See http://www.w3.org/TR/xmlbase/ for
-                information about this attribute.</xs:documentation>
-        </xs:annotation>
-    </xs:attribute>
-    
-    <xs:attributeGroup name="specialAttrs">
-        <xs:attribute ref="xml:base"/>
-        <xs:attribute ref="xml:lang"/>
-        <xs:attribute ref="xml:space"/>
-    </xs:attributeGroup>
-    
-</xs:schema>