https://dumas.ccsd.cnrs.fr/dumas-00825555 Contributor : ESPE LNFConnect in order to contact the contributor Submitted on : Friday, May 24, 2013 - 9:23:05 AM Last modification on : Wednesday, February 23, 2022 - 1:28:06 PM Long-term archiving on: : Sunday, August 25, 2013 - 4:10:36 AM