Anita Gupta Odd Petter N. Slyngstad Reidar Conradi Parastoo Mohagheghi Harald Rønneberg Einar Landre A Case Study of Defect-Density and Change-Density and their Progress over Time. 7-16 2007 conf/csmr/2007 CSMR http://doi.ieeecomputersociety.org/10.1109/CSMR.2007.5 db/conf/csmr/csmr2007.html#GuptaSCMRL07