GWAI-81 German Workshop on Artificial Intelligence Bad Honnef, January 26–31, 1981 Siekmann, Jörg Heftet / 1981 / Engelsk
8th International Conference on Automated Deduction Oxford, England, July 27- August 1, 1986. Proceedings Siekmann, Jörg H. Heftet / 1986 / Engelsk
Knowledge Science, Engineering and Management Second International Conference, KSEM 2007, Melbourne, Australia, November 28-30, 2007, Proceedings Zhang Zili Heftet / 2007 / Engelsk
Cognitive Systems Joint Chinese-German Workshop, Shanghai, China, March 7-11, 2005, Revised Selected Papers Lu Ruqian Heftet / 2007 / Engelsk
