Constrained GA Optimization. - Marc Schoenauer; Spyros Xanthakis (ICGA, 1993)

Qualitative Algorithmics Using Order of Growth Reasoning. - Antoine Missier; Spyros Xanthakis; Louise Travé-Massuyès (ECAI, 1994)

Immune System and Fault-Tolerant Computing. - Spyros Xanthakis; Constantinos Karapoulios; Régis Pajot; Ahmed Rozz (Artificial Evolution, 1995)

Using Conventional Testing Techniques for KBS: An Overview. - Spyros Xanthakis; W. Rabot (EUROVAV, 1995)