G. Stumme. Conceptual Structures at Work: 12th International Conference on Conceptual Structures (ICCS 2004), volume 3127 of LNCS, page 109-125. Heidelberg, Springer, (2004)
G. Stumme. Conceptual Structures at Work: 12th International Conference on Conceptual Structures (ICCS 2004), volume 3127 of LNCS, page 109-125. Heidelberg, Springer, (2004)