https://hal.ird.fr/ird-02054438 Contributor : Philippe Lavigne DelvilleConnect in order to contact the contributor Submitted on : Friday, March 1, 2019 - 7:01:26 PM Last modification on : Wednesday, March 23, 2022 - 12:08:26 PM Long-term archiving on: : Thursday, May 30, 2019 - 4:35:56 PM