J. Franklin, C. Wergin, and H. Booth. (September 2013)http://csrc.nist.gov/publications/drafts/nistir-7946/draft_nistir_7946.pdf Online: accessed 20-October-2013.
J. Ellis, and J. Van Belle. Proceedings of the 2009 Annual Conference of the Southern African Computer Lecturers' Association, page 41--49. New York, NY, USA, ACM, (2009)
A. Deshpande, and D. Riehle. Open Source Development, Communities and Quality, volume 275 of IFIP – The International Federation for Information Processing, Springer US, (2008)
D. Denning. chapter Activism, hacktivism, and cyberterrorism: the Internet as a tool for influencing foreign policy, page 239--288. National Defense Research Institute - RAND, (2001)