Removed remainders of old citation style

functions/fresnelPropagation/fresnelPropagationKernel.m

@@ -54,11 +54,6 @@ function kernel = fresnelPropagationKernel(N, fresnelNumbers, settings)
 % kernel : numerical array
 %     The constructed propagation-kernel
 %
-% Notes
-% -----
-% For further information on when to choose which variant, refer to D. G. Voelz and M. C. Roggemann [1]_.
-% 
-%
 % See also
 % --------
 % functions.fresnelPropagation.fresnelPropagator

functions/generators/gaussianBeam.m

@@ -6,7 +6,8 @@ function psi = gaussianBeam(dimX,dimY,lambda,propDistance,beamWaist)
 % 
 % This function generates the complex field amplitude and phase at a plane at
 % distance <propDistance> from the waist of the Gaussian beam. For a reference see
-% e.g. [1]_. Note that in the literature, a forward propagating plane wave is often
+% e.g. section 3.1 in :cite:`Teich_1991_Photonics`. 
+% Note that in the literature, a forward propagating plane wave is often
 % defined as exp(-i*k*z+i*omega*t). Here exp(i*k*z-i*omega*t) is used as a forward
 % propagating wave which leads to a switch in signs of the complex terms in the
 % gaussian beam field. Note also that the amplitude is not normalized.
@@ -29,10 +30,6 @@ function psi = gaussianBeam(dimX,dimY,lambda,propDistance,beamWaist)
 % psi : numerical array
 %     propagated wave field at distance <propDistance>
 %
-% References
-% ----------
-% .. [1] Anthony E. Siegman: 'Lasers', University Science Books (1986), pp. 663
-%
 % Example
 % -------
 %
@@ -78,3 +75,5 @@ else
     psi = exp(1i*k*propDistance - 1i*phi)/beamWidth * exp(-(X.^2 + Y.^2)/beamWidth^2 ...
         + 1i*k*(X.^2 + Y.^2)/(2*radiusCurvature));
 end
+
+end

literature.bib

@@ -302,3 +302,10 @@
   timestamp = {2019.05.16},
 }
 
+@book{Teich_1991_Photonics,
+  title={Fundamentals of photonics},
+  author={Teich, Malvin Carl and Saleh, Bea},
+  publisher={John Wiley \& Sons},
+  year={1991}
+}
+