Bryce Day Sean Chin Ke-Zun Levi Lovelock Christof Lutteroth Climbing the Ladder: CMMI Level 3. 97-106 2009 EDOC https://doi.org/10.1109/EDOC.2009.29 https://doi.ieeecomputersociety.org/10.1109/EDOC.2009.29 conf/edoc/2009 db/conf/edoc/edoc2009.html#DayKLL09