1. Paulk, M.C., Weber, C.V., Curtis, B., Chrissis, M.B.: The Capability Maturity Model: Guidelines For Improving The Software Process. Addison-Wesley, Reading (1995)
2. OECD, Organisation for Economic Co-Operation and Development, SME and Entrepreneurship Outlook (2005)
3. SEI. CMMI for Systems Engineering, Software Engineering, Integrated Product and Process Development, and Supplier Sourcing (CMMI-SE/SW/IPPD/SS, V1.1) Staged Representation. Technical Report CMU/SEI-2002-TR-012 ESC-TR-2002-012, Software Engineering Institute (2002)
4. ISO, Software Process Assessment - Part 2: A reference model for processes and process capability. Technical Report ISO/IEC 15504 TR2:1998, International Organization for Standardization (1998)
5. Thomas, M., McGarry, F.: Top-down vs. bottom-up process improvement. IEEE Software 11(4), 12–13 (1994)