@INPROCEEDINGS{LeeMK04, author = {Hyo-Jeong Lee and Yu-Seong Ma and Yong-Rae Kwon}, title = {Empirical Evaluation of Orthogonality of Class Mutation Operators}, booktitle = {Proceedings of the 11th Asia-Pacific Software Engineering Conference}, year = {2004}, address = {Busan, Korea}, month = {30 November - 3 December}, pages = {512-518} }