- Centrum voor Wiskunde en Informatica (Amsterdam, Netherlands) (3)
- Baeten, J. C. M. (2)
- Universiteit van Amsterdam (2)
- Association for Computing Machinery (1)
- Association for Symbolic Logic (1)
- European Association for Theoretical Computer Science (1)
- European Research Consortium for Informatics and Mathematics (1)
- European Strategic Programme of Research and Development in Information Technology (1)
- Groote, J. F. (Jan Frisco), 1965- (1)
- IEEE Computer Society. Technical Committee on Mathematical Foundations of Computing (1)
- International Conference on Concurrency Theory (1)
- Klop, J. W. (Jan Willem), 1945- (1)
- Symposium on Logic in Computer Science (1)
- Vrije Universiteit te Amsterdam (1)