Nkechi Mercy Okeke, Ann Ebere Okechukwu, Iheanyichukwu G. Ozurumba, Polycarp M.D. Okeke, Nwakaego Ebele Ekwealor, Stella Chioma Nwizu, Uzoamaka Lucynda Koledoye, Mary Chinyere Okengwu and Beatrice N. Onah
Journal of Engineering and Applied Sciences 15 ( 12 ): 2585 - 2591 , 2020