1. Github.com, Github Website (last access: August 2013).
2. G. Madey, V. Freeh, R. Tynan, The open source software development phenomenon: an analysis based on social network theory, in: Americas Conference on Information Systems (AMCIS2002), 2002, pp. 1806–1813.
3. IBM and the US Data Processing Industry: An Economic History;Fisher,1983
4. A.W. Kosner, Github is the Next Big Social Network, Powered By What You Do, Not Who You Know (July 2012).
5. Knowledge management in software engineering: a systematic review of studied concepts, findings and research methods used;Bjørnson;Inf. Softw. Technol.,2008