- Henrik Legind Larsen, Gabriella Pasi, Daniel Ortiz Arroyo, Troels Andreasen, Henning Christiansen, editors, Flexible Query Answering Systems, 7th International Conference, FQAS 2006, Milan, Italy, June 7-10, 2006, Proceedings. Volume 4027 of Lecture Notes in Computer Science, Springer, 2006.