https://hal.inria.fr/inria-00075524 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 6:23:56 PM Last modification on : Thursday, February 3, 2022 - 11:16:53 AM Long-term archiving on: : Sunday, April 4, 2010 - 9:50:47 PM