https://hal-imt.archives-ouvertes.fr/hal-00479598 Contributor : Admin Télécom ParistechConnect in order to contact the contributor Submitted on : Friday, April 30, 2010 - 10:15:19 PM Last modification on : Monday, June 7, 2021 - 6:40:05 PM Long-term archiving on: : Thursday, September 30, 2010 - 4:55:53 PM