|
|
|
Balarabe Yushau, PhD |
|
|
|
Department of Mathematical Sciences King Fahd University of Petroleum & Minerals PO Box 1154, Dhahran 31261 Saudi Arabia |
|
Tel.: +966 3 860 1081 |
|
Fax.: +966 3 860 2979 |
|
e-mail: byushau@kfupm.edu.sa |