https://hal.inria.fr/inria-00070152 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Friday, May 19, 2006 - 7:16:19 PM Last modification on : Friday, February 4, 2022 - 3:23:52 AM Long-term archiving on: : Tuesday, February 22, 2011 - 10:57:20 AM