https://hal.inria.fr/inria-00543955 Contributor : Denis RoegelConnect in order to contact the contributor Submitted on : Monday, December 6, 2010 - 10:20:43 PM Last modification on : Friday, February 26, 2021 - 3:28:08 PM Long-term archiving on: : Monday, November 5, 2012 - 12:25:11 PM