1.
HEART RATE VARIABILITY AND FUNCTION OF EXTERNAL BREATHING IN THE PATIENTS WITH CHRONIC OBSTRUCTIVE LUNG DISEASE. J. V. N. Karazin Khark. Nat. Univ., Ser. Med. 2015;(9):42-46. дата звернення Жовтень 25, 2026. https://periodicals.karazin.ua/medicine/article/view/7191