- Armin Wolf, Thom W. Frühwirth, Marc Meister, editors, 19th Workshop on (Constraint) Logic Programming, Ulm, Germany, February 21-23, 2005. Volume 2005-01 of Ulmer Informatik-Berichte, Universität Ulm, Germany, 2005.
- Dietmar Seipel, Michael Hanus, Ulrich Geske, Oskar Bartenstein, editors, Applications of Declarative Programming and Knowledge Management, 15th International Conference on Applications of Declarative Programming and Knowledge Management, INAP 2004, and 18th Workshop on Logic Programming, WLP 2004, Potsdam, Germany, March 4-6, . Volume 3392 of Lecture Notes in Computer Science, Springer, 2005.