1989 Conference on Information Science and Systems, page. 339 - 344, 1989-03-01
1988 International Symposium on Information Theory, page. 19 - 24, 1988-06-01
IEEE International Conference on Communications 1998, page. 43 - 43, 1988-06-01
Proceedings of the 1988 Conference on Information Sciences and Systems, page. 1001 - 1006, 1988-03-01