1. Department of Mathematics Capital University of Science and Technology (CUST) Islamabad Pakistan
2. Department of Mathematics KPR Institute of Engineering and Technology Coimbatore India
3. Laboratoire de Physique Quantique de la Matière et Modélisation Mathématique (LPQ3M) University of Mascara Mascara Algeria
4. Department of Mathematics Dr. N. G. P Institute of Technology Coimbatore India