https://hal.inria.fr/inria-00070052 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Friday, May 19, 2006 - 6:56:03 PM Last modification on : Thursday, February 3, 2022 - 11:14:36 AM Long-term archiving on: : Sunday, April 4, 2010 - 8:19:50 PM