Putting into Practice Moreau's Extended Generalized Modus Ponens. - A. M. Spilski-Pétieau; A. Moreau; D. Willaeys (IPMU, 1988)

Approximate Reasoning in Expert Systems: Inference and Combination Tools. - A. M. Spilski-Pétieau; D. Willaeys (IPMU, 1992)