Steve Counsell Robert M. Hierons Rajaa Najjar George Loizou Youssef Hassoun The Effectiveness of Refactoring, Based on a Compatibility Testing Taxonomy and a Dependency Graph. 181-192 2006 conf/taicpart/2006 TAIC PART http://doi.ieeecomputersociety.org/10.1109/TAIC-PART.2006.33 db/conf/taicpart/taicpart2006.html#CounsellHNLH06