Dr. Ahmed Hashim Mohaisen Al-Yasari, Department of Physics, College of Education For Pure Science, University of Babylon, Hilla, IRAQ
E-mail: ahmed_taay@yahoo.com

Dr. V. Ananthaswamy, Assistant Professor, Department of Mathematics, The Madura College (Autonomous), Madurai, Tamil Nadu, India
E-mail: ananthu9777@gmail.com