Peter W. Eklund Ollivier Haemmerlé Conceptual Structures: Knowledge Visualization and Reasoning, 16th International Conference on Conceptual Structures, ICCS 2008, Toulouse, France, July 7-11, 2008, Proceedings 5113 2008 978-3-540-70595-6 ICCS Lecture Notes in Computer Science Springer db/conf/iccs/iccs2008.html