Daniel Oberle Steffen Staab Raphael Volz Three Dimensions of Knowledge Representation in WonderWeb. 31- 2005 19 KI 1 http://www.kuenstliche-intelligenz.de/index.php?id=no-6423&tx_ki_pi1[showUid]=1059&cHash=721dd8d292 db/journals/ki/ki19.html#OberleSV05