https://cel.archives-ouvertes.fr/cel-01870478 Contributor : Julien VovelleConnect in order to contact the contributor Submitted on : Friday, September 7, 2018 - 4:33:06 PM Last modification on : Monday, June 28, 2021 - 2:26:07 PM Long-term archiving on: : Saturday, December 8, 2018 - 5:26:36 PM