Hiệp. “RESEARCH AND FABRICATION OF DEVICE FOR NON-CONTACT MEASUREMENT OF HEART AND RESPIRATION RATES BASED ON RADAR DOPPLER 24 GHZ”. Journal of Military Science and Technology, no. 71 (February 5, 2021): 40–48. Accessed April 30, 2024. https://en.jmst.info/index.php/jmst/article/view/102.