https://hal.inria.fr/hal-01018725 Contributor : Monique TeillaudConnect in order to contact the contributor Submitted on : Friday, July 4, 2014 - 6:09:29 PM Last modification on : Thursday, January 20, 2022 - 4:19:41 PM Long-term archiving on: : Saturday, October 4, 2014 - 1:01:57 PM