D. Bouyssou, Th. Marchant, P. Perny, M. Pirlot, A. Tsoukiàs and Ph. Vincke
are happy to welcome you on their common web site, dedicated to
decision support.

• theoretical and axiomatic foundations of MCDA at all levels (approach, methodology, methods);
• conceptual and operational validation of the use of MCDA in real world problems.

Since then, we meet regularly to discuss various problems and eventually write some papers or books in small subgroups. Recently, we completed our first full-sized group production : it is a book entitled "Evaluation and decision models : a critical perspective" (erratum).