https://hal.inria.fr/inria-00076536 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 9:15:22 PM Last modification on : Friday, February 4, 2022 - 3:22:52 AM Long-term archiving on: : Friday, May 13, 2011 - 9:50:55 PM