https://hal.archives-ouvertes.fr/hal-01934636 Contributor : Sylvain DernatConnect in order to contact the contributor Submitted on : Thursday, December 6, 2018 - 1:28:45 PM Last modification on : Friday, May 6, 2022 - 3:46:48 AM Long-term archiving on: : Thursday, March 7, 2019 - 12:22:03 PM