1. CMMI Product Team: CMMI for Development, Version 1.3 (CMMI-DEV, V1.3),
http://resources.sei.cmu.edu/asset_files/TechnicalReport/2010_005_001_15287.pdf
2. International Standards Organisation: ISO/IEC 12207:2008 - Systems and software engineering — Software life cycle processes (2008)
3. Staples, M., Niazi, M., Jeffery, R., Abrahams, A., Byatt, P., Murphy, R.: An exploratory study of why organizations do not adopt CMMI. Journal of Systems and Software 80, 883–895 (2007)
4. Rautiainen, K., Lassenius, C., Sulonen, R.: 4CC: A framework for managing software product development. EMJ - Engineering Management Journal 14, 27–32 (2002)
5. Lecture Notes in Computer Science;S. Brinkkemper,2008