Yusuff, A., B. Osofisan, M. Okelola, and I. Adeyemo. “HUMAN FACE RECOGNITION USING A HYBRID LEARNING RBF NEURAL NETWORK WITH PSEUDO ZERNIKE MOMENT INVARIANT”. LAUTECH Journal of Engineering and Technology, Vol. 3, no. 2, Feb. 2005, pp. 16-21, https://laujet.com/index.php/laujet/article/view/197.