Institution: | 1. Laboratory of Theoretical and Applied Computer Science (LITA), UFR MIM, University of Paul Verlaine, Metz, Ile du Saulcy, 57045 Metz, France;2. Laboratory of Modeling, Optimization and Operations Research, LMI, National Institute for Applied Sciences, Rouen BP 08, Place Emile Blondel F 76131 Mont Saint Aignan Cedex, France |