https://hal.archives-ouvertes.fr/hal-02500130 Contributor : Agnès Perrin-DouceyConnect in order to contact the contributor Submitted on : Thursday, March 5, 2020 - 6:07:41 PM Last modification on : Wednesday, November 3, 2021 - 7:45:43 AM Long-term archiving on: : Saturday, June 6, 2020 - 5:06:20 PM