Martynenko, A.V., A.S. Antonova, and A.M. Yegorenkov. 1. “SPECTRAL INDEPENDENT COMPONENT ANALYSIS OF HEART RATE VARIABILITY”. The Journal of V. N. Karazin Kharkiv National University, Series "Medicine", no. 10 (1), 18-24. https://periodicals.karazin.ua/medicine/article/view/7162.