Hypermedia and Knowledge Representation: An Object-Oriented Design Based on Fuzzy Logic. - Michalis Vazirgiannis; K. Petrou; A. Tsobanidis; Michael Hatzopoulos (SEKE, 1993)

An Object-Oriented Framework for Knowledge Representation Based on Fuzzy Sets. - Michalis Vazirgiannis; K. Petrou; A. Tsobanidis; Michael Hatzopoulos (J. Intell. Fuzzy Syst., 1993)