1. Heart rate variability: A review;Acharya;Med. Bio. Eng. Comput.,2006
2. G.D. Clifford, Signal processing methods for heart rate variability, Ph.D. thesis, Department of Engineering Science, University of Oxford, 2002
3. Heart rate variability—Standards of measurement, physiological interpretation, and clinical use;Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology;Circ. Eur. Heart J.,1996
4. Frequency domain measures of heart rate variability before the onset of non-sustained ventricular tachycardia in patients with coronary artery disease;Huikuri;J. Am. Heart Assoc.,1993
5. A wavelet based heart rate variability analysis for the study of nonsustained ventricular tachycardia;Chen;IEEE Trans. Biomed. Eng.,2002