https://hal-inrap.archives-ouvertes.fr/hal-02506600 Contributor : Stéphanie Morel-LecornuéConnect in order to contact the contributor Submitted on : Thursday, March 12, 2020 - 2:11:48 PM Last modification on : Thursday, May 27, 2021 - 10:10:10 AM Long-term archiving on: : Saturday, June 13, 2020 - 3:31:10 PM