Aniza Suliman, Sharifatul, and Normi Abdul Hadi. “Optimizing the Shape Parameters of Beta-Spline Using Particle Swarm Optimization”. International Journal of Engineering & Technology, vol. 7, no. 4.33, Dec. 2018, pp. 93-97, https://doi.org/10.14419/ijet.v7i4.33.23492.