Vinay R Bhavsar, and Dr. Mukesh Patel. “Predication of Population Growth With Rate of Migration Using Cubic Spline Method”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 5, no. 2, Feb. 2018, pp. 1083-6, https://www.ijaerd.org/index.php/IJAERD/article/view/2544.