Dr. Hiyam Hassan Kadhem, Assistant Professor, Department of Mathematics, Al-Kufa University, Iraq
Email: hiyamh.kadhim@uokufa.edu.iq

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

Dr. J. Jayapriya, Assistant Professor, Department of Mathematics, Sathyabama University, Chennai- 600119, India
Email: priyanandam_1975@rediffmail.com