T. Mytkowicz, A. Diwan, M. Hauswirth, and P. Sweeney. Proceedings of the 31st ACM SIGPLAN Conference on Programming Language Design and Implementation, page 187--197. ACM, (June 2010)
T. Proebsting. Proceedings of the 22nd ACM SIGPLAN-SIGACT symposium on Principles of programming languages - POPL \textquotesingle95, ACM Press, (1995)