1. Mathematics and Decision Sciences Laboratory, Department of Mathematics, Frères Mentouri University, Constantine, Algeria
2. Laboratoire des Mathématiques Appliquées et Didactique (LMAD), Ecole Normale Supérieure El Katiba Assia Djebar, Constantine, Algeria
3. Mathematics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia