https://hal-univ-paris.archives-ouvertes.fr/hal-01227209 Contributor : Agnès CelleConnect in order to contact the contributor Submitted on : Friday, February 26, 2021 - 8:24:57 AM Last modification on : Thursday, April 1, 2021 - 11:22:04 AM Long-term archiving on: : Thursday, May 27, 2021 - 6:09:53 PM