add citation tests

tests/citations.bib

@@ -0,0 +1,40 @@
+@article{Wang2025,
+  author = {Wang, Erming and Yu, Kaiwen and Cao, Jiqing and Wang, Minghui and Katsel, Pavel and Song, Won-min and Wang, Zhen and Li, Yuxin and Wang, Xusheng and Wang, Qian and Xu, Peng and Yu, Gefei and Zhu, Li and Geng, Jia and Habibi, Parnian and Qian, Lu and Tuck, Tony and Li, Aiqun and TCW, Julia and Roussos, Panos and Brennand, Kristen J. and Haroutunian, Vahram and Johnson, Erik C.B. and Seyfried, Nicholas T. and Levey, Allan I. and Bennett, David A. and Peng, Junmin and Cai, Dongming and Zhang, Bin},
+  title = {Multiscale proteomic modeling reveals protein networks driving Alzheimer’s disease pathogenesis},
+  journal = {Cell},
+  year = {2025},
+  volume = {},
+  number = {},
+  pages = {},
+  publisher = {Elsevier},
+  doi = {10.1016/j.cell.2025.08.038},
+  url = {https://doi.org/10.1016/j.cell.2025.08.038},
+  issn = {0092-8674}
+}
+
+@misc{csl,
+  title = {Citation Style Language},
+  year = {2025},
+  medium = {online},
+  accessed = {2025-06-10},
+  URL = {https://citationstyles.org/},
+}
+
+@misc{linux,
+  journal = {Blog | Linux Foundation},
+  title = {Classic SysAdmin: Vim 101: A Beginner’s Guide to Vim},
+  year = {2025},
+  medium = {online},
+  accessed = {2025-06-10},
+  URL = {https://www.linuxfoundation.org/blog/blog/classic-sysadmin-vim-101-a-beginners-guide-to-vim},
+}
+
+@book{Satrapa2011,
+  author = {Pavel Satrapa},
+  title = {IPv6},
+  publisher = {Edice CZ.NIC},
+  year = {2011},
+  edition = {3. vydání},
+  ISBN = {978-80-904248-4-9},
+  URL = {https://www.bookport.cz/kniha/ipv6-treti-vydani-5999/},
+}