Denis Kozlov Jussi Koskinen Jouni Markkula Markku Sakkinen Evaluating the Impact of Adaptive Maintenance Process on Open Source Software Quality. 186-195 2007 conf/esem/2007 ESEM http://doi.ieeecomputersociety.org/10.1109/ESEM.2007.43 db/conf/esem/esem2007.html#KozlovKMS07