Chin Lim, C., Affandi, M., Basah, S.N. and Din, M.Y. 2018. Evaluating Lower Limb Joint Flexion by Computerized Visual Tracking System and Compared with Electrogoniometer and Universal Goniometer. Journal of Telecommunication, Electronic and Computer Engineering (JTEC). 10, 1-4 (Jan. 2018), 9–14.