https://hal-normandie-univ.archives-ouvertes.fr/hal-02317999 Contributor : Barbara HELLYConnect in order to contact the contributor Submitted on : Thursday, October 17, 2019 - 4:31:28 PM Last modification on : Friday, April 1, 2022 - 1:32:02 PM Long-term archiving on: : Saturday, January 18, 2020 - 2:58:56 PM