1. INRIA Rho^ne-Alpes, ZIRST Monbonnot, 655 avenue de l’Europe, 38334 Saint Ismier, France; Bernard.Brogliato@inrialpes.fr
2. National Aerospace Laboratory NLR, Department of Mathematical Models and Methods, Information and Communication Technology Division, PO Box 90502, 1006 Amsterdam, The Netherlands; tendam@nlr.nl
3. Universite´ Jean Monnet-St Etienne, Equipe d’Analyse Nume´rique UMR CNRS 5585, 23 rue du Dr Michelon, 42023 Saint Etienne cedex 2, France; paoli@anumsun1.univ-st.etienne.fr
4. INRIA Rocquencourt, BP 105, 78153 Le Chesnay cedex, France; Frank.Genot@inria.fr
5. Schneider Electric, Avenue des Jeux Olympiques, S2E, bureau 204 38000 Grenoble, France