A. B. Kul’chyns’kyi, W. Zukow, T. A. Korolyshyn, and I. L. Popovych, “Interrelations between changes in parameters of HRV, EEG and humoral immunity at patients with chronic pyelonephritis and cholecystitis”, J Educ Health Sport, vol. 7, no. 9, pp. 439–459, Sep. 2017.