1. Professor of computer science at the State University of New York, Stony Brook 11794
2. Assistant professor of computer science at Wright State University, Dayton, Ohio 45431
3. Lederle postdoctoral fellow at Stony Brook
4. Assistant professor of computer science at Wayne State University, Detroit, Michigan 48202
5. Member of the research staff at Bell Laboratories, Holmdel, New Jersey 07733
6. Graduate students in computer science at Stony Brook