Othman, F., and J. M. Ali. “Preserving Shape of Data by Using Rational Quadratic Bezier Function: Pengekalan Bentuk Data Dengan Menggunakan Fungsi Nisbah Bezier Kuadratik”. EDUCATUM Journal of Science, Mathematics and Technology, vol. 2, no. 2, Dec. 2015, pp. 19-26, https://ejournal.upsi.edu.my/index.php/EJSMT/article/view/68.