https://dumas.ccsd.cnrs.fr/dumas-03112086 Contributor : Nîmes UniversitéConnect in order to contact the contributor Submitted on : Friday, January 15, 2021 - 10:30:30 PM Last modification on : Saturday, January 23, 2021 - 3:10:07 AM Long-term archiving on: : Friday, April 16, 2021 - 7:54:24 PM