https://hal.univ-rennes2.fr/hal-01808390 Contributor : Laurence LerouxConnect in order to contact the contributor Submitted on : Tuesday, June 5, 2018 - 4:01:28 PM Last modification on : Monday, December 13, 2021 - 12:03:01 PM Long-term archiving on: : Thursday, September 6, 2018 - 6:16:53 PM