Tran, Thi-Thao, Truong Pham Van, and Phan Dai Duong. “A Remote PPG Based Approach for Heart Rate Estimation”. Journal of Military Science and Technology, no. 79 (May 19, 2022): 31–40. Accessed January 26, 2026. https://jmst.mod.gov.vn/index.php/jmst/article/view/461.