https://hal.univ-reunion.fr/hal-02452387 Contributor : Réunion UnivConnect in order to contact the contributor Submitted on : Thursday, January 23, 2020 - 2:33:25 PM Last modification on : Tuesday, October 19, 2021 - 5:56:00 PM Long-term archiving on: : Friday, April 24, 2020 - 4:03:44 PM