1. Anrep, G. V., Pascual, W., Rossler, R.: Respiratory variations of the heart rate. Proc. roy. Soc. B119, 191?232 (1936)
2. Best, C. H., Taylor, N. B.: The physiological basis of medical practice, 8th ed. Baltimore: Williams and Wilkins 1966
3. Brecher, G. A.: Venous Return. Grune & Stratton 1956
4. Bugge-Asperheim, B., Kiil, F.: Cardiac response to increased aortic pressure. Scand. J. clin. Lab. Invest.24, 345?360 (1969)
5. Charlier, A. A.: Beat to beat hemodynamic effects of lung inflation and normal respiration in anesthetized and conscious dogs. Brussels; Arscia 1967