Evgeniy, Bogatyrev, and Kodkin Vladimir. “Filtering of Fluctuations of the Basic Electropotential in Complex Signals of a Contactless Electrocardiogram”. British Journal of Healthcare and Medical Research 9, no. 4 (September 10, 2022): 282–287. Accessed December 3, 2024. http://804474.wannyin.cyou/index.php/JBEMi/article/view/12848.