Added citation files

CITATION.bib

@@ -0,0 +1,15 @@
+@book{herzog2021simulation,
+  title={Simulation mit dem Warteschlangensimulator},
+  author={Herzog, Alexander},
+  year={2021},
+  publisher={Springer},
+  location={Wiesbaden},
+  doi={10.1007/978-3-658-34668-3}
+}
+
+@software{warteschlangensimulator,
+  title={Warteschlangensimulator},
+  author={Herzog, Alexander},
+  year={2017},
+  url={https://a-herzog.github.io/Warteschlangensimulator}
+}

CITATION_PAPERS.bib

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+@article{herzog2024b,
+  title={A Discrete Process Modelling Study of ARGESIM Benchmark "C2 – Flexible Assembly System" with Warteschlangensimulator},
+  author={Herzog, Alexander},
+  year={2024},
+  journal={Simulation Notes Europe},
+  volume={33},
+  number={1},
+  pages={23-28},
+  doi={10.11128/sne.33.1.1036},
+  url={https://www.sne-journal.org/fileadmin/user\_upload\_sne/SNE\_Issues\_OA/SNE\_34\_1/articles/sne.34.1.10673.bn02.OA.pdf}
+}
+
+@article{herzog2024a,
+  title={A Discrete Process Modelling Study of ARGESIM Comparison "C22 – Non-standard Queuing Policies" with Warteschlangensimulator},
+  author={Herzog, Alexander},
+  year={2024},
+  journal={Simulation Notes Europe},
+  volume={33},
+  number={1},
+  pages={29-34},
+  doi={10.11128/sne.33.1.1036},
+  url={https://www.sne-journal.org/fileadmin/user\_upload\_sne/SNE\_Issues\_OA/SNE\_34\_1/articles/sne.34.1.10674.bn22.OA.pdf}
+}
+
+@article{HNPB2021,
+  title={Methoden und Konzepte des Digitalen Logistikzwillings der AG der Dillinger Hüttenwerke (Dillinger)},
+  author={Herzog, Alexander and Necil, Jan and Pollet, Martin and Busch, Heike},
+  year={2021},
+  journal={Simulation in Produktion und Logistik},
+  publisher={Cuvillier Verlag},
+  pages={157-166},
+  url={http://www.asim-fachtagung-spl.de/asim2021/papers/Proof\_188.pdf}
+}