https://hal.inria.fr/inria-00112186 Contributor : Laurent CiarlettaConnect in order to contact the contributor Submitted on : Tuesday, November 7, 2006 - 4:41:05 PM Last modification on : Friday, February 26, 2021 - 3:28:04 PM Long-term archiving on: : Saturday, May 14, 2011 - 12:27:29 AM