Kulik, A.L., A.K. Zaderihin, V.I. Shulgin, and A.V. Martynenko. “INDICATORS OF HEART RATE VARIABILITY IN HEALTHY VOLUNTEERS DEPENDING ON THE RESPIRATION RATE AND INHALATION-EXHALATION RATIO”. The Journal of V. N. Karazin Kharkiv National University, series "Medicine"0, no. 18 (1): 14-19. Accessed May 6, 2024. https://periodicals.karazin.ua/medicine/article/view/6950.