Abd Rahaman, N. S., & Jumadi, N. A. (2021). Comparison of Regression Analysis using Origin, Matlab, and Regression Learner App in Formulating the Linear Equation for Leg Flexibility Index. Evolution in Electrical and Electronic Engineering, 2(2), 164-172. https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/3311