Riehle D, Riemer P, Kolassa C, Schmidt M. PAID VS. VOLUNTEER WORK IN OPEN SOURCE [Internet]. 47th International Hawai'i Conference on System Sciences (HICSS-47). IEEE Computer Society; 2014. pp. 3286-3295. http://dirkriehle.com/uploads/2013/08/paid-v8-final-web.pdf
Hofmann G, Riehle D, Kolassa C, Mauerer W. A Dual Model of Open Source License Growth. Petrinja E, Succi G, Ioini N, Sillitti A. IFIP Advances in Information and Communication TechnologyOpen Source Software: Quality Verification. Berlin, Heidelberg: Springer Berlin Heidelberg; 2013. pp. 245 - 256. PDF icon oss2013.hofmann.pdf (417.12 KB)