Shevchuck, M.I. 2015. HEART RATE AND ARTERIAL PRESSURE VARIABILITY INDICES IN PATIENTS WITH ARTERIAL HYPERTENSION IN GROUPS OF TREATMENT WITH BETA ADRENERGIC ANTAGONIST, INHIBITOR OF ANGIOTENSINCONVERTING ENZYME AND THEIR COMBINATIONS AND CLASSES OF ECG QRS COMPLEX DURATION. The Journal of V. N. Karazin Kharkiv National University, series "Medicine". 26 (Jul. 2015), 33-40.