Dang, Khoa Nguyen, Tran Thi Van, Pham Hai Yen, Bui Thanh Tung, Van Su Luong, and Minhhuy Le. 2024. “2D Wavelet Transform on Extraction of Heartbeat Signal With Ultra-Wideband Impulse Radar”. International Journal of Intelligent Systems and Applications in Engineering 12 (16s):94-100. https://ijisae.org/index.php/IJISAE/article/view/4794.