- International Conference on Algebraic and Logic Programming (5)
- Hanus, Michael (2)
- Kirchner, Hélène (2)
- Levi, Giorgio, 1942- (2)
- Rodríguez Artalejo, M. (Mario) (2)
- Heering, J (1)
- International Workshop on Higher-Order Algebra, Logic, and Term Rewriting (1)
- Meinke, K. (Karl) (1)
- Wechler, Wolfgang, 1940- (1)