https://hal-normandie-univ.archives-ouvertes.fr/hal-01943194 Contributor : marie-hélène bobletConnect in order to contact the contributor Submitted on : Monday, December 3, 2018 - 4:25:23 PM Last modification on : Tuesday, March 8, 2022 - 2:58:02 PM Long-term archiving on: : Monday, March 4, 2019 - 2:39:36 PM