1. S. Hales, Statical essays: containing haemostatics or an account of some hydraulic experiments made on the blood and blood vessels of animals, Printed for W. Innys and R. Manby, at the west-end of St. Paul's, and T. Woodward, at the Half-Moon between Temple-Gate, Fleetstreet,1733, 1733.
2. Spontaneous rhythms in physiological control systems;Hyndman;Nature,1971
3. Heart rate variability: a review;Acharya;Med. Biol. Eng. Comput.,2006
4. An anova test for functional data;Cuevas;Comput. Stat. Data Anal.,2004
5. A new method for detecting atrial fibrillation using RR intervals;Moody;Comput. Cardiol.,1983