Proceedings of the Twenty-First Annual ACM Symposium on Theory of Computing, Seattle, Washington, May 15-17, 1989 [electronic resource] / sponsored by the ACM Special Interest Group for Automata and Computability Theory
"ACM order no. 508890." AVAILABLE ONLINE TO AUTHORIZED PSU USERS.
Bibliography Note
Includes bibliographies and index.
Reproduction Note
Electronic reproduction. New York, NY : Association for Computing Machinery, [199-?]. Mode of access: World Wide Web. Digitized and made available by: ACM Digital Library.