1. Rushmer, R.F. Cardiovascular dynamics. 2nd ed., Philadelphia and London, Saunders, p. 435 (1961).
2. Ibid., p. 462.
3. Goldberg, A.H. The patient with heart disease: pre-operative evaluation and preparation. Anesth. Analg.55: 618–621 (1976).
4. Wintrobe, M.M., Thorn, G.W., Adams, R.D., Braunwald, E., Isselbacher, K.J., &Petersdorf, R.G. Principles of internal medicine. 7th ed., McGraw-Hill, New York, p. 1144 (1974).
5. Ibid., p. 1124.