https://cel.archives-ouvertes.fr/cel-00963609 Contributor : Cimpa CimpaConnect in order to contact the contributor Submitted on : Friday, March 21, 2014 - 3:31:03 PM Last modification on : Wednesday, March 23, 2022 - 3:50:07 PM Long-term archiving on: : Saturday, June 21, 2014 - 11:50:30 AM