Collaborative Maintenance in Large Open-Source Projects, den Besten, Matthijs, Dalle Jean-Michel, and Galia Fabrice , OSS2006: Open Source Systems (IFIP 2.13), p.233 - 244, (2006)

A Case Study of Open Source Software Development: The Apache Server, Mockus, Audris, Fielding Roy, and Herbsleb James , Proceedings of the International Conference on Software Engineering (ICSE 2000), June, (2000)

Community, joining, and specialization in open source software innovation: a case study, von Krogh, Georg, Spaeth S., and Lakhani Karim R. , Research Policy, Volume 32, Number 7, p.1217-1241, (2003)

Applying Social Network Analysis Techniques to Community-Driven Libre Software Projects, López-Fernández, L., Robles Gregorio, Gonzalez-Barahona Jesus M., and Herraiz I. , International Journal of Information Technology and Web Engineering, Volume 1, Number 3, (2006)

Analyzing cloning evolution in the Linux kernel, Antoniol, G., Villano U., Merlo E., and Di Penta M. , Information and Software Technology, Volume 44, Number 13, p.755-765, (2002)