Kurniawati, Alfita, Torib Hamzah, and Tri Bowo Indrato. “A Low-Cost Transcutaneous Electrical Nerve Stimulation Measuring Device Using Frequency-to-Voltage and Current-to-Voltage ”. Journal of Electronics, Electromedical Engineering, and Medical Informatics 2, no. 2 (July 23, 2020): 65-70. Accessed July 5, 2025. http://www.jeeemi.org/index.php/jeeemi/article/view/75.