S. Butler, M. Wermelinger, Y. Yu, and H. Sharp. Proc. of the 14th European Conf. on Software Maintenance and Reengineering, page 159--168. IEEE Computer Society, (2010)
D. Shepherd, L. Pollock, and K. Vijay-Shanker. PASTE '07: Proceedings of the 7th ACM SIGPLAN-SIGSOFT workshop on Program analysis for software tools and engineering, page 49--54. ACM, (2007)