https://hal.archives-ouvertes.fr/hal-02507258 Contributor : Laurent SusiniConnect in order to contact the contributor Submitted on : Thursday, March 12, 2020 - 10:15:32 PM Last modification on : Saturday, December 4, 2021 - 4:02:54 AM Long-term archiving on: : Saturday, June 13, 2020 - 6:19:47 PM