Nazali, Muhammad Naqiuddin, and Leow Pei Ling. “Autotuned Electrical Muscle Stimulator With Electromyogram Biofeedback”. ELEKTRIKA- Journal of Electrical Engineering 16, no. 2 (August 29, 2017): 34–38. Accessed March 29, 2024. https://elektrika.utm.my/index.php/ELEKTRIKA_Journal/article/view/60.