Wahyuni, Refni, Herianto, Ikhtiyaruddin, and Yuda Irawan. “IoT-Based Pulse Oximetry Design As Early Detection of Covid-19 Symptoms”. International Journal of Interactive Mobile Technologies (iJIM) 17, no. 03 (February 6, 2023): pp. 177–187. Accessed November 24, 2024. https://online-journals.org/index.php/i-jim/article/view/35859.