https://hal.univ-reunion.fr/hal-01244135 Contributor : Réunion UnivConnect in order to contact the contributor Submitted on : Tuesday, June 12, 2018 - 3:47:19 PM Last modification on : Tuesday, October 19, 2021 - 5:56:09 PM Long-term archiving on: : Thursday, September 13, 2018 - 9:16:44 PM