https://hal.univ-reunion.fr/hal-02486476 Contributor : Réunion UnivConnect in order to contact the contributor Submitted on : Friday, February 21, 2020 - 7:38:31 AM Last modification on : Wednesday, November 3, 2021 - 4:32:18 AM Long-term archiving on: : Friday, May 22, 2020 - 2:49:53 PM