http://hci-itil.com/CMMI/CMMI_processes/engineering_requirements_development.html
http://chrguibert.free.fr/cmmi12/cmmi-dev/text/pa-oid.php
http://www.software-quality-assurance.org/cmmi-supplier-agreement-management.html#intro
http://www.software-quality-assurance.org/cmmi-organizational-innovation-and-deployment.html#intro
https://www.tutorialspoint.com/cmmi/cmmi-process-areas.htm
http://it.toolbox.com/blogs/musings-pm/case-study-how-not-to-manage-a-project-team-53020