https://hal.inria.fr/inria-00075463 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 6:16:20 PM Last modification on : Friday, February 4, 2022 - 3:22:01 AM Long-term archiving on: : Tuesday, April 12, 2011 - 11:14:17 PM