Voronenko, O. S., M. S. Brynza, D. E. Volkov, D. O. Lopin, O. V. Martynenko, and M .I. Yabluchansky. “HEART ELECTRICAL AXIS α ANGLE VALUES DISTRIBUTION IN PATIENTS, UNDERGOING PERMANENT PACEMAKER IMPLANTATION”. The Journal of V. N. Karazin Kharkiv National University, series "Medicine"0, no. 31 (November 17, 2016): 32-36. Accessed November 28, 2021. https://periodicals.karazin.ua/medicine/article/view/6355.