1. Institute of Computing Science and Technology, Guangzhou University, Guangzhou, China
2. School of Mathematics, Damghan University, Damghan, Iran
3. TI Lab, Faculty of Science Ben M’sik, Hassan II University of Casablanca, Casablanca, Morocco and Regional Center for the Professions of Education and Training (C.R.M.E.F), Casablanca-settat, Morocco
4. PG & Research Department of Mathematics, Jamal Mohammed College, Trichy, India