Dr. Vishnu Narayan Mishra, Assistant Professor of Mathematics, Sardar Vallabhbhai National Institute of Technology, India
E-mail: vishnu_narayanmishra@yahoo.co.in

Dr. Nematollah Kadkhoda, Department of Mathematics, Faculty of Basic Sciences, Bozorgmehr university of Qaenat, Qaenat, Iran
Email: n_kadkhoda@yahoo.com

Dr. Mustafa ÖZKAN, Department of Mathematics, Trakya University, TURKEY
Email: mustafaozkan@trakya.edu.tr, mustafaozkan22@cloud.com