cleanup: do not use , and the word and to sperate authors! The new typo3 System does not like it

journal-2019.bib

@@ -30,7 +30,7 @@
 
 @article{journal-BFNNS19,
   title = {A More Fine-Grained Complexity Analysis of Finding the Most Vital Edges for Undirected Shortest Paths},
-  author = {Cristina Bazgan, Till Fluschnik, Andr\'{e} Nichterlein, Rolf Niedermeier, and Maximilian Stahlberg},
+  author = {Cristina Bazgan, Till Fluschnik, Andr\'{e} Nichterlein, Rolf Niedermeier, Maximilian Stahlberg},
   journal = {Networks},
   year = {2019},
   volume = {73},

journal-2020.bib

 @article{journal-FFHKMN20,
   title = {Diminishable Parameterized Problems and Strict Polynomial Kernelization},
-  author = {Henning Fernau, Till Fluschnik, Danny Hermelin, Andreas Krebs, Hendrik Molter, and Rolf Niedermeier},
+  author = {Henning Fernau, Till Fluschnik, Danny Hermelin, Andreas Krebs, Hendrik Molter, Rolf Niedermeier},
   journal = {Computability},
   year = {2020},
   volume    = {9},

journal-2021.bib

@@ -203,7 +203,7 @@
 
 @article{journal-BHHKN20,
   title = {Parameterized Complexity of Min-Power Asymmetric Connectivity},
-  author = {Matthias Bentert, Roman Haag, Christian Hofer, Tomohiro Koana, and André Nichterlein},
+  author = {Matthias Bentert, Roman Haag, Christian Hofer, Tomohiro Koana, André Nichterlein},
   journal = {Theory of Computing Systems},
   year = {2021},
   volume={65},
@@ -212,4 +212,4 @@
   type = {journal2021},
   url = {https://arxiv.org/abs/2005.14620},
   url2 = {https://doi.org/10.1007/s00224-021-10057-6}
-}
\ No newline at end of file
+}