Martynenko, A., G. Raimondi, N. Budreiko, and L. Maliarova. “Fuzzy Logic Approach for Heart Rate Variability”.
The Journal of V. N. Karazin Kharkiv National University, Series "Medicine"
, no. 42, June 2021, doi:10.26565/2313-6693-2021-42-01.