1. Al-Dahan, M.I., Leaning M.S., Carson E.R., Hill D.W. and Finkelstein L.: “The validation of complex unidentifiable models of the cardiovascular system”. In: Proc. 7th IFAC/IFORS Symposium on Identification and System Parameter Estimation, Eds.: S.A. Billings and P. Young, Pergamon Press, Oxford, 1985.
2. Astrand P.O.: Experimental studies of Physical working capacity in relation to sex and age. Muwsgaard, Kopenhagen, 1952.
3. Brodan V., Hajek M. and Kuhn E.: “An analog model of pulse rate during physical load and recovery”. Physiolog. Bohemoslov., 20, 1971, pp. 189–198.
4. Best C.H. and Taylor N.B.: The physiological basis of medical practice. Bailiere and Cox, London, 1955.
5. Bekey G.A.: “Parameter estimation in biological systems - a survey”. In: Proc. 3th IFAC Symposium on Indentification and System Parameter Estimation, North Holland, 1973, pp. 1123-1130