https://dumas.ccsd.cnrs.fr/dumas-00989841 Contributor : OSUG UGAConnect in order to contact the contributor Submitted on : Monday, May 12, 2014 - 3:01:57 PM Last modification on : Monday, July 20, 2020 - 3:05:57 PM Long-term archiving on: : Monday, April 10, 2017 - 9:05:43 PM