Author/Authors :
Rao, K. P. R Department of Applied Mathematics - Acharya Nagarjuna University-Dr. M. R. Appa Row Campus -Andhra Pradesh, India , Lakshmi, K. B Department of Applied Mathematics - Acharya Nagarjuna University-Dr. M. R. Appa Row Campus -Andhra Pradesh, India , Mustafa, Z Department of Mathematics - The Hashemite University - Zarqa, Jordan