https://hal.inria.fr/inria-00070138 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Friday, May 19, 2006 - 7:14:12 PM Last modification on : Tuesday, December 7, 2021 - 4:04:24 PM Long-term archiving on: : Tuesday, February 22, 2011 - 11:33:04 AM