diff --git a/thesis/references.bib b/thesis/references.bib
index 26ccd2f8bca760c11a9b8863c1c76dda4d00f89c..ca879c237ca9366bf88b0b27cae7ed11cd9ecffb 100644
--- a/thesis/references.bib
+++ b/thesis/references.bib
@@ -21,6 +21,13 @@
   volume = {4}
 }
 
+@article{GeiHal2017,
+  author = {Geiger, R Stuart and Halfaker, Aaron},
+  title = {Operationalizing Conflict and Cooperation between Automated Software Agents in Wikipedia: A Replication and Expansion of “Even Good Bots Fight”},
+  journal = {unpublished},
+  year = {2017}
+}
+
 @inproceedings{GeiRib2011,
   author = {Geiger, R Stuart and Ribes, David},
   title = {Trace Ethnography: Following Coordination through Documentary Practices},