Antoine Couprie, Univ. de Toulouse, IRIT, UMR5505 CNRS, France

Thi Bich Ngoc Hoang, CNRS, France

Josiane Mothe, INSPE-UT2, Univ. de Toulouse, IRIT, UMR5505 CNRS, France

Faneva Ramiandrisoa, Univ. d’Antananarivo & Univ. de Toulouse & IRIT, UMR5505 CNRS, France

Olivier Teste, IUT Blagnac-UT2, Univ. de Toulouse, IRIT, UMR5505 CNRS, France

Md Zia Ullah, CNRS, France