Geir Kjetil Hanssen Aiko Fallas Yamashita Reidar Conradi Leon Moonen 487-490 2009 ICSM https://doi.org/10.1109/ICSM.2009.5306278 https://doi.ieeecomputersociety.org/10.1109/ICSM.2009.5306278 conf/icsm/2009 db/conf/icsm/icsm2009.html#HanssenYCM09