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3. Task Force of the European Society of Cardiology and North American Society of Pacing and Electrophysiology, “Heart rate variability. Standards of measurement, physiological interpretation and clinical use,” Circulation, 93, 1043-1065 (1996).
4. Fedotov, A. A. and Akulov, S. A., Measurement of Transformation of Biomedical Signals by Clinical Monitoring Systems [in Russian], Radio i Svyaz’, Moscow (2013).
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