Ahmad, M.K.I, B.S.K.K Ibrahim, D. Hanafi, K.A.A. Rahman, and M. Mahadi Abdul Jamil. 2015. “Framework of Lower-Limb Musculoskeletal Modeling for FES Control System Development”. International Journal of Integrated Engineering 7 (3). https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/1134.