Institution: | 1.Department of Sciences and Technology, University of Hassiba Ben Bouali, Chlef, Algeria ;2.Department of Mathematics, BP 284, University Centre BELHADJ Bouchaib Ain Tmouchent, 46000, Ain Tmouchent, Algeria ;3.Department of Mathematics, College of Sciences and Arts, Qassim University, Ar Rass, Saudi Arabia ;4.Laboratoire de Mathématiques Appliquées et de Modélisation, Université 8 Mai 1945 Guelma. B.P. 401, 24000, Guelma, Algérie ; |