1. Capability Maturity Model (CMM) for Software, version 1.1.
2. Capability Maturity Model Integration (CMMI) for Systems Engineering (SE)/Software Engineering (SW)/Integrated Product and Process Development (IPPD), version 1.1.
3. Architectural and Functional Comparison of the CMMI Model Representation, Draft, Mike Konrad and Sandy Shrum, December 1999.
4. Expanding the Focus of Software Process Improvement to Include Systems Engineering, Kent Johnson and Joe Dindo, TeraQuest Metrics, Incorporated, Crosstalk, October 1998.