https://hal-insu.archives-ouvertes.fr/insu-00923270 Contributor : Pascale TalourConnect in order to contact the contributor Submitted on : Thursday, January 2, 2014 - 11:12:31 AM Last modification on : Thursday, January 2, 2014 - 1:42:24 PM Long-term archiving on: : Saturday, April 8, 2017 - 9:45:47 AM