@inproceedings{JaakkolaFeyerScheweetal.2003, author = {Hannu Jaakkola and Thomas Feyer and Klaus-Dieter Schewe and Bernhard Thalheim}, title = {Intensionality in Concept Theory}, booktitle = {Proceedings of the 11th European-Japanese Conference on Information Modelling and Knowledge Bases, May 29 - June 1, 2001, Maribor, Slovenia}, pages = {412 -- 414}, year = {2003}, }