Kulik, O. L., O. J. Schmidt, S. A. S. Belal, and I. A. Rank. “IMPLEMENTATION OF BIOFEEDBACK IN A CLOSED LOOP OF HEART RATE VARIABILITY AND PACED BREATHING IN PATIENTS WITH ARTERIAL HYPERTENSION”. The Journal of V. N. Karazin Kharkiv National University, series "Medicine"0, no. 27 (July 5, 2015): 10-15. Accessed May 6, 2024. https://periodicals.karazin.ua/medicine/article/view/3425.