https://hal-insu.archives-ouvertes.fr/insu-00567378 Contributor : Pascale TalourConnect in order to contact the contributor Submitted on : Monday, February 21, 2011 - 10:01:43 AM Last modification on : Wednesday, November 28, 2018 - 2:48:22 PM Long-term archiving on: : Sunday, May 22, 2011 - 2:36:19 AM