Peter Ebraert Jorge Vallejos Pascal Costanza Ellen Van Paesschen Theo D'Hondt Change-oriented software engineering. 3-24 2007 ICDL http://doi.acm.org/10.1145/1352678.1352680 conf/smalltalk/2007icdl db/conf/smalltalk/icdl2007.html#EbraertVCPD07