Q. Ge, and N. Findler. Australian Joint Conference on Artificial Intelligence, volume 406 of Lecture Notes in Computer Science, page 432-448. Springer, (1988)
R. Findler, M. Latendresse, and M. Felleisen. Proceedings of 9th ACM Symposium on Foundations of Software Engineering (ESEC/FSE 2001), page 229--236. ACM Press, (September 2001)
Findler, and Felleisen. Proceedings of Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA), Tampa Bay, Florida, ACM Press, (October 2001)