Trung T. Dinh-Trong Birgit Geppert J. Jenny Li Frank Rößler Looking for More Confidence in Refactoring? How to Assess Adequacy of Your Refactoring Tests. 255-263 2008 QSIC http://doi.ieeecomputersociety.org/10.1109/QSIC.2008.49 conf/qsic/2008 db/conf/qsic/qsic2008.html#Dinh-TrongGLR08