https://hal.inria.fr/hal-02267750 Contributor : Bernard BrogliatoConnect in order to contact the contributor Submitted on : Monday, August 19, 2019 - 4:58:50 PM Last modification on : Friday, February 4, 2022 - 3:34:16 AM Long-term archiving on: : Thursday, January 9, 2020 - 6:17:49 PM