Dubrovin, V. I., and U. V. Tverdokhleb. “IMPROVEMENT OF ECG SIGNALS ANALYSIS BASED ON WAVELET CONVERSION IN HIGH-RESOLUTION ELECTROCARDIOGRAPHY SYSTEM”. Radio Electronics, Computer Science, Control, no. 1 (August 12, 2011). Accessed May 6, 2024. http://ric.zntu.edu.ua/article/view/14427.