Usman, M., F. Hammed, Z. Ogunwobi, A. Alaba, and S. Okusaga. “ANALYTICAL-NUMERICAL METHOD FOR SOLVING NONLINEAR DYNAMICAL SYSTEMS”. LAUTECH Journal of Engineering and Technology, Vol. 13, no. 1, Jan. 2019, pp. 26-37, https://laujet.com/index.php/laujet/article/view/345.