Vainoras, Alfonsas, Dovilė Ašeriškytė, Jonas Poderys, and Zenonas Navickas. “Fractal Dimensions in Evaluation of Heart Function Parameters During Physical Investigations”. Baltic Journal of Sport and Health Sciences 3, no. 57 (November 7, 2018). Accessed April 19, 2021. https://journals.lsu.lt/baltic-journal-of-sport-health/article/view/641.