Ibrahim, B.S.K.K, M.O. Tokhi, M.S. Huq, and S.C. Gharooni. 2011. “Optimized Fuzzy Control For Natural Trajectory Based Fes- Swinging Motion”. International Journal of Integrated Engineering 3 (2). https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/370.