Kovalchuk, V.I., O.S. Svechnikova, and L.A. Bulavin. “Multifractal Analysis of Cardiac Series and Predictors of Sudden Cardiac Death”. Ukrainian Journal of Physics 66, no. 10 (November 1, 2021): 879. Accessed December 6, 2021. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2021068.