https://hal.univ-reunion.fr/hal-02406154 Contributor : Réunion UnivConnect in order to contact the contributor Submitted on : Thursday, December 12, 2019 - 8:45:17 AM Last modification on : Tuesday, October 19, 2021 - 5:56:00 PM Long-term archiving on: : Friday, March 13, 2020 - 4:09:50 PM