https://hal-cnam.archives-ouvertes.fr/hal-02505966 Contributor : Gilbert SaportaConnect in order to contact the contributor Submitted on : Thursday, March 12, 2020 - 6:16:05 PM Last modification on : Monday, February 21, 2022 - 3:38:18 PM Long-term archiving on: : Saturday, June 13, 2020 - 1:00:23 PM