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Why hackers do what they do: Understanding motivation and effort in free/open source software projects. In: . Perspectives on Free and Open Source Software. MIT Press; 2005. lakhaniwolf.pdf (67.75 KB) .
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Community, joining, and specialization in open source software innovation: a case study. Research Policy. 2003;32:1217-1241. krogh03.pdf (588.22 KB) .