Alimbayev, C., Z. Alimbayeva, K. Ozhikenov, O. Bodin, and Y. Mukazhanov. “Development of Measuring System for Determining Life-Threatening Cardiac Arrhythmias in a patient’s Free Activity”. Eastern-European Journal of Enterprise Technologies, vol. 1, no. 9 (103), Feb. 2020, pp. 12-22, doi:10.15587/1729-4061.2020.197079.