https://halshs.archives-ouvertes.fr/halshs-02105500 Contributor : James CostaConnect in order to contact the contributor Submitted on : Sunday, April 21, 2019 - 12:41:03 PM Last modification on : Wednesday, November 10, 2021 - 2:18:01 PM Long-term archiving on: : Monday, July 22, 2019 - 12:11:18 PM