https://hal-cnrs.archives-ouvertes.fr/hal-03537600 Contributor : Achim WirthConnect in order to contact the contributor Submitted on : Thursday, January 20, 2022 - 2:53:07 PM Last modification on : Saturday, February 12, 2022 - 3:46:48 AM Long-term archiving on: : Thursday, April 21, 2022 - 7:10:07 PM