Vijayarakavan, M., and V. Amirthalingam. “Numerical Solution of the Non-Linear Singular Systems from Fluid Dynamics Using Leapfrog Method”. International Journal of Engineering & Technology, vol. 7, no. 3.10, July 2018, pp. 195-9, https://doi.org/10.14419/ijet.v7i3.10.25361.