M. A. R. Azizi, Jaafar, A, Khairuddin Osman. “PERFORMANCE ANALYSIS FOR SPRAIN ANKLE REHABILITATION SYSTEM USING GYRO SENSOR”. International Journal of Advanced Science and Technology, Vol. 29, no. 6s, Apr. 2020, pp. 860 -72, http://sersc.org/journals/index.php/IJAST/article/view/8945.