1. Chrissis, M.B., Konrad, M.D., Shrum, S.: CMMI for Development: Guidelines for Process Integration and Product Improvement, 3rd edn. (2011)
2. +SAFE, V1.2: A Safety Extension to CMMI-DEV, V1.2, CMU/SEI-2007-TN-006 (March 2007)
3. ISO/IEC TS 15504-10:2011, Information technology -Process assessment - Part 10: Safety extension
4. ISO/IEC TS 15504-10:2011, Information technology – Process assessment
5. Automotive SPICE® Process Reference Model v4.5 (May 2010)