Okeke Nkechi Mercy, Uzoamaka Lucynda Koledoye, Nwakaego Ebele Ekwealor, Justina Ngozi Igwe, Beatrice N. Onah, Stella Chioma Nwizu, Polycarp M.D. Okeke, Iheanyichukwu G. Ozurumba and Ann Ebere Okechukwu
Journal of Engineering and Applied Sciences 15 ( 12 ): 2576 - 2584 , 2020