https://hal.telecom-paris.fr/hal-02913891 Contributor : Isabelle BlochConnect in order to contact the contributor Submitted on : Monday, August 10, 2020 - 6:47:35 PM Last modification on : Wednesday, November 3, 2021 - 6:18:20 AM Long-term archiving on: : Monday, November 30, 2020 - 5:24:48 PM