- ACM Special Interest Group for Automata and Computability Theory (4)
- IEEE Computer Society. Technical Committee on Mathematical Foundations of Computing (4)
- Symposium on Foundations of Computer Science (4)
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- Rice University. Dept. of Mathematical Sciences and Electrical Engineering (1)
- University of California, Berkeley. Dept. of Electrical Engineering and Computer Sciences (1)
- University of Houston. Dept. of Computer Science (1)
- University of Michigan (1)