The onion has cancer: some social network analysis visualizations of open source project communication, Oezbek, Christopher, Prechelt Lutz, and Thiel Florian , Proceedings of the 3rd International Workshop on Emerging Trends in Free/Libre/Open Source Software Research and Development (FLOSS '10), New York, NY, USA, p.5–10, (2010)

The search for a research method for studying OSS process innovation, Prechelt, Lutz, and Oezbek Christopher , Empirical Software Engineering, 8/2011, Volume 16, Issue 4, p.514 - 537, (2011)