Authors
Mohamed Alahyane
mohamed.alahyane@univ-lille.fr
L2EP, Faculty of Sciences and Technologies, University of Lille, Villeneuve dAscq, France
Abderrazak Chrifi
Department of Mathematics, Faculty of Science and Technology, Cadi Ayyad University, Morocco
Younes Echarroudi
Laboratory of mathematics and population dynamics, Faculty of sciences Semlalia Marrakesh, Morocco