https://hal.inria.fr/inria-00186184 Contributor : Amos DavidConnect in order to contact the contributor Submitted on : Thursday, November 8, 2007 - 11:42:40 AM Last modification on : Friday, February 26, 2021 - 3:28:08 PM Long-term archiving on: : Monday, September 24, 2012 - 3:00:57 PM