https://hal-normandie-univ.archives-ouvertes.fr/hal-03186751 Contributor : Yves Chevrefils DesbiollesConnect in order to contact the contributor Submitted on : Wednesday, March 31, 2021 - 12:24:09 PM Last modification on : Friday, January 7, 2022 - 3:38:02 AM Long-term archiving on: : Thursday, July 1, 2021 - 6:29:54 PM