https://hal.inria.fr/inria-00071337 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Tuesday, May 23, 2006 - 4:30:36 PM Last modification on : Friday, February 4, 2022 - 3:25:07 AM Long-term archiving on: : Tuesday, February 22, 2011 - 11:53:15 AM