Update ref info

thesis/references.bib

@@ -308,11 +308,14 @@
   note = {\url{http://www.dobusch.net/pub/uni/MuellerBirn-Dobusch-Herbsleb(2013)Work-to-Rule.pdf}}
 }
 
-@article{MuellerBirn2014,
+@techreport{MuellerBirn2014,
   title = {Bots in Wikipedia: Unfolding Their Duties},
-  author = {Mueller-Birn, Claudia and Benjamin, Jesse and Nest, Marisa},
-  journal = {unpublished},
-  year = {2014}
+  author = {Mueller-Birn, Claudia},
+  institution = {Freie Universität Berlin, Fachbereich Mathematik und Informatik},
+  type = {Technical Reports Serie B},
+  number = {TR-B-19-01},
+  year = {2019},
+  note = {\url{https://refubium.fu-berlin.de/handle/fub188/24775}}
 }
 
 @misc{ORES,