To Fork or Not to Fork: Fork Motivations in SourceForge Projects, Nyman, Linus, and Mikkonen Tommi , Open Source Systems: Grounding Research (OSS 2011), 10/2011, p.259-268, (2011)

Collecting data from distributed FOSS projects, Fagerholm, Fabian, and Taina Juha , 3rd Workshop on Public Data about Software Development (WoPDaSD 2008), 2009, p.8-13, (2008)