Affiliation: | 1.Faculty of Science, University of Ngaoundéré, Ngaoundéré, 454, Cameroon ;2.LASE Laboratory, University of Ngaoundéré, Ngaoundéré, 454, Cameroon ;3.ComNets, University of Bremen, 28334, Bremen, Germany ;4.Faculty of Science and Technique, University Cheikh Anta Diop, 5005, Dakar, Senegal ; |