https://hal.ird.fr/ird-01841222 Contributor : Emmanuel ParadisConnect in order to contact the contributor Submitted on : Tuesday, July 17, 2018 - 10:40:12 AM Last modification on : Thursday, May 19, 2022 - 3:44:13 PM Long-term archiving on: : Thursday, October 18, 2018 - 1:07:22 PM