Reference
- Guyton, A. C., Text book of medical physiology (W.B. Saunders Co.), 1965.
- Stacy, R. W. & Waxman, B. D., Computers in biomedical research, 1, 1965.
- Goldman, M. J., Principles of clinical electrocardiography (Langer Medical Publications), 1965.
- Okajima, M., Stark, L., Whipple, G. & Yasui, S., IEEE Trans, on BMR, (July 1963), 166.
- Balm, G. J., IEEE Trans, on BME, (October 1967), 258.