Language entropy: A metric for characterization of author programming language distribution, Krein, Jonathan L., MacLean Alexander C., Delorey Daniel P., Knutson Charles D., and Eggett Dennis L. , 4th Workshop on Public Data about Software Development (WoPDaSD 2009), 2009, (2009)

Why Do Developers Contribute to Open Source Projects? First Evidence of Economic Incentives, Hann, Il-Horn, Roberts Jeff, Slaughter Sandra, and Fielding Roy , Proceedings of the 2nd ICSE Workshop on Open Source, (2002)

Toward an understanding of the motivation Open Source Software developers, Ye, Yunwen, and Kishida Kouichi , Proceedings of the 25th International Conference on Software Engineering, Washington, DC, USA, p.419–429, (2003)

Understanding the Motivations, Participation, and Performance of Open Source Software Developers: A Longitudinal Study of the Apache Projects, Roberts, Jeffrey A., Hann Il-Horn, and Slaughter Sandra A. , Management Science, 07/2006, Volume 52, Issue 7, p.984 - 999, (2006)

Open source software: Motivation and restrictive licensing, Fershtman, Chaim, and Gandal Neil , International Economics and Economic Policy, Volume 4, p.209-225, (2007)

Development Success in Open Source Software Projects: Exploring the Impact of Copylefted Licenses, Colazo, Jorge A., Fang Yulin, and Neufeld Derrick J. , Americas Conference on Information Systems (AMCIS 2005), (2005)

A study of the contributors of PostgreSQL, German, Daniel M. , Proceedings of the 2006 international workshop on Mining software repositories, New York, NY, USA, p.163–164, (2006)

Mining email social networks, Bird, Christian, Gourley Alex, Devanbu Prem, Gertz Michael, and Swaminathan Anand , Proceedings of the 2006 international workshop on Mining software repositories, New York, NY, USA, p.137–143, (2006)

Mining Eclipse Developer Contributions via Author-Topic Models, Linstead, Erik, Rigor Paul, Bajracharya Sushil, Lopes Cristina, and Baldi Pierre , Fourth International Workshop on Mining Software Repositories (MSR'07:ICSE Workshops 2007), Minneapolis, MN, USA, p.30 - 30, (2007)

Detecting Patch Submission and Acceptance in OSS Projects, Bird, Christian, Gourley Alex, and Devanbu Prem , Fourth International Workshop on Mining Software Repositories (MSR'07:ICSE Workshops 2007), Minneapolis, MN, USA, p.26 - 26, (2007)