diff --git a/thesis/references.bib b/thesis/references.bib
index 3717f37a4b0804325786c3dd3da907e062eddb7e..e39ec85d313f4872224ef73650094b8241f25fac 100644
--- a/thesis/references.bib
+++ b/thesis/references.bib
@@ -52,7 +52,9 @@
   editor = {Lovink, Geert W. and Tkacz, Nathaniel},
   publisher = {Institute of Network Cultures},
   address = {Amsterdam},
-  year = {2011}
+  year = {2011},
+  pages = {78--93},
+  note = {\url{https://www.networkcultures.org/_uploads/%237reader_Wikipedia.pdf}}
 }
 
 @article{Geiger2014,
@@ -143,13 +145,15 @@
   number = {5},
   pages = {664--688},
   year = {2013},
-  publisher = {Sage Publications Sage CA: Los Angeles, CA}
+  publisher = {Sage Publications Sage CA: Los Angeles, CA},
+  note = {\url{https://stuartgeiger.com/papers/abs-rise-and-decline-wikipedia.pdf}}
 }
 
 @article{HalGeiMorSarWig2018,
   title = {ORES: Facilitating re-mediation of Wikipedia’s socio-technical problems},
   author = {Halfaker, Aaron and Geiger, R Stuart and Morgan, Jonathan T and Sarabadani, Amir and Wight, Adam},
-  year = {2018}
+  year = {2018},
+  note = {\url{https://upload.wikimedia.org/wikipedia/commons/4/48/ORES_-_Facilitating_re-mediation_of_Wikipedia%27s_socio-technical_problems.pdf}}
 }
 
 @inproceedings{HalKitRied2011,
@@ -200,14 +204,18 @@
   volume = {1},
   number = {2},
   pages = {19},
-  year = {2007}
+  year = {2007},
+  note = {\url{https://www.researchgate.net/profile/Bongwon_Suh/publication/200772541_Power_of_the_Few_vs_Wisdom_of_the_Crowd_Wikipedia_and_the_Rise_of_the_Bourgeoisie/links/53d1e6220cf2a7fbb2e95533.pdf}}
 }
 
-@book{LazFenHo2017,
-  title = {Research methods in human-computer interaction},
+@incollection{LazFenHo2017,
+  booktitle = {Research methods in human-computer interaction},
+  title = {Chapter 11: Analyzing qualitative data},
   author = {Lazar, Jonathan and Feng, Jinjuan Heidi and Hochheiser, Harry},
   year = {2017},
-  publisher = {Morgan Kaufmann}
+  pages = {299--328},
+  publisher = {Morgan Kaufmann},
+  note = {\url{https://books.google.de/books?hl=de&lr=&id=hbkxDQAAQBAJ&oi=fnd&pg=PP1&dq=Research+methods+in+human-computer+interaction+Lazar&ots=Sp721bZa7O&sig=3uBLXXjw8lALjAOHbGyPm3vSHn8#v=onepage&q=Research%20methods%20in%20human-computer%20interaction%20Lazar&f=false}}
 }
 
 @book{Lessig2006,