Ramli, A. A., S. Kasim, M. F. Md. Fudzee, N. Mohd. Nawi, H. Mahdin, and J. Watada. “A Revisited Convex Hull-Based Fuzzy Linear Regression Model for Dynamic Fuzzy Healthcare Data”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 9, no. 3-7, Nov. 2017, pp. 49-57, https://jtec.utem.edu.my/jtec/article/view/3075.