SCHWEIK, Charles M. a ENGLISH, Robert C. Internet success: a study of open-source software commons. Cambridge, Mass.: MIT Press, c2012. ISBN 9780262301206. Dostupné také z: https://proxy.k.utb.cz/login?url=http://ieeexplore.ieee.org/xpl/bkabstractplus.jsp?bkn=6267538.