Validating Requirements: The Evolutionary Approach. - Michel Lemoine; D. Marre; P. Thuillier; J.-L. Wippler (COMPSAC, 1998)

A proposed meta-model for formalizing systems engineering knowledge, based on functional architectural patterns. - François Pfister; Vincent Chapurlat; Marianne Huchard; Clémentine Nebut; J.-L. Wippler (Syst. Eng., 2012)