O.A. Olu-Arotiowa, R.O. Yusuf and F. Adelowo-Imoekparia
International Journal of Soft Computing 3 ( 4 ): 333 - 337 , 2008
O.A. Olu-Arotiowa, F. Adelowo-Imoekparia and O.K. Afolabi
Journal of Engineering and Applied Sciences 2 ( 12 ): 1774 - 1776 , 2007