Affiliation: | 1. Department of Telecommunication and Network Engineering, IUT-Fotso Victor of Bandjoun, The University of Dschang, P. O. Box 134, Bandjoun Cameroon;2. Department of Physics, The University of Bamenda, The Higher Teachers’ Training College, P.O. Box 39, Bamenda, Cameroon;3. Nonlinear Physics and Complex Systems Group, Department of Physics, The University of Yaoundé I, The Higher Teachers’ Training College, P.O. Box 47, Yaoundé, Cameroon;4. Laboratory of Mechanics, Department of Physics, Faculty of Sciences, The University of Yaounde I, P.O. Box 812, Yaoundé, Cameroon |