diff --git a/thesis/chapters/implementation.tex b/thesis/chapters/implementation.tex
index 5435e4c..3db1a95 100644
--- a/thesis/chapters/implementation.tex
+++ b/thesis/chapters/implementation.tex
@@ -278,10 +278,10 @@ This implementation reads byte code from a file and executes it. The execution i
 always done in three steps:
 
 \begin{enumerate}[1.]
-    \item{Initializing the state according the header of the byte code file.}
+    \item{Initializing the state according to the header of the byte code file.}
     \item{Applying operations given by the byte code to the state. This includes local
             Clifford gates, $CZ$ gates and measurements (the measurement outcome is ignored).}
-    \item{Sampling the state according the description in the header of the byte code 
+    \item{Sampling the state according to the description in the header of the byte code 
         file and writing the sampling results to either a file or \lstinline{stdout}. }
 \end{enumerate}
 
diff --git a/thesis/cover.png b/thesis/cover.png
index b0efd94..6ce4339 100644
Binary files a/thesis/cover.png and b/thesis/cover.png differ
diff --git a/thesis/main.bib b/thesis/main.bib
index 73ec458..e41715e 100644
--- a/thesis/main.bib
+++ b/thesis/main.bib
@@ -21,7 +21,7 @@
     CHP,
     url={https://www.scottaaronson.com/chp/},
     urldate={09.03.2020},
-    author={Scott Aaronson, Daniel Gottesman},
+    author={Scott Aaronson and Daniel Gottesman},
     title={CHP: CNOT-Hadamard-Phase},
     year=2005,
     note={https://www.scottaaronson.com/chp/}
@@ -39,6 +39,7 @@
     andersbriegel2005,
     title={Fast simulation of stabilizer circuits using a graph state representation},
     author={Simon Anders and Hans J. Briegel},
+    note={http://arxiv.org/abs/quant-ph/0504117v2},
     year=2005
 }
 @book{
@@ -51,7 +52,7 @@
 @book{
     kaye_ea2007,
     title={An Introduction to Quantum Computing},
-    author={Phillip Kaye, Raymond Laflamme and Michelle Mosca},
+    author={Phillip Kaye and Raymond Laflamme and Michelle Mosca},
     year=2007,
     publisher={Oxford University Press}
 }
@@ -75,7 +76,7 @@
     gottesman_aaronson2008,
     title={Improved Simulation of Stabilizer Circuits},
     year=2008,
-    author={Daniel Gottesman, Scott Aaronson},
+    author={Daniel Gottesman and Scott Aaronson},
     note={https://arxiv.org/abs/quant-ph/0406196v5}
 }
 
@@ -106,7 +107,7 @@
     nielsen_chuang_2010,
     title={Quantum Computation and Quantum Information},
     year=2010,
-    author={Michael A. Nielsen, Isaac L. Chuang},
+    author={Michael A. Nielsen and Isaac L. Chuang},
     publisher={CAMBRIDGE UNIVERSITY PRESS},
     note={www.cambridge.org/9781107002173}
 }
@@ -123,7 +124,7 @@
     marquezino_ea_2019,
     title={A Primer on Quantum Computing},
     year=2019,
-    author={Franklin de Lima Marquezino, Renato Portugal, Carlile Lavor},
+    author={Franklin de Lima Marquezino and Renato Portugal and Carlile Lavor},
     publisher={Springer}
 }
 @article{
@@ -155,7 +156,7 @@
     hein_eisert_briegel2008,
     title={Multi-party entanglement in graph states},
     year=2008,
-    author={M. Hein, J. Eisert, H.J. Briegel},
+    author={M. Hein and J. Eisert and H.J. Briegel},
     note={https://arxiv.org/abs/quant-ph/0307130v7}
 }
 @article{
@@ -240,14 +241,14 @@
 @article{
     li_chen_fisher2019,
     year=2019,
-    author={Yaodong Li, Xiao Chen, Matthew P. A. Fisher},
+    author={Yaodong Li and Xiao Chen and Matthew P. A. Fisher},
     title={Measurement-driven entanglement transition in hybrid quantum circuits},
     note={https://arxiv.org/abs/1901.08092}
 }
 @article{
     bermejovega_lin_vdnest2015,
     year=2015,
-    author={Juan Bermejo-Vega, Cedric Yen-Yu Lin, Maarten Van den Nest},
+    author={Juan Bermejo-Vega and Cedric Yen-Yu Lin and Maarten Van den Nest},
     title={Normalizer circuits and a Gottesman-Knill theoremfor infinite-dimensional systems},
     note={https://arxiv.org/pdf/1409.3208.pdf}
 }
@@ -268,7 +269,7 @@
 @article{
     bermejovega_vdnest2018,
     year=2018,
-    author={Juan Bermejo-Vega, Maarten Van den Nest},
+    author={Juan Bermejo-Vega and Maarten Van den Nest},
     title={Classical simulations of Abelian-group normalizer circuits with intermediate measurements},
     note={https://arxiv.org/abs/1210.3637v2}
 }