1. Dubois, A. B. (1964) Resistance to breathing. InHandbook of physiology, section 3, vol. 1,Respiration, chap. 16. American Physiological Society.
2. La Salle, J. andLefschetz, S. (1961)Stability by Lyapunov’s direct method with applications, Academic Press, New York.
3. Lion, P. M. (1966) Rapid identification of linear and nonlinear systems. Proceedings of the Joint Automatic Control Conference Seattle, Washington, 605–615.
4. Mendel, J. M. (1973) Discrete techniques of parameter estimation—the equation error formulation. Marcel Dekker Inc., New York, chap. 4.
5. Nada, M. D. andLinkens, D. A. (1976) An adaptive analogue tracker for automatic measurement of lung parameters.Med. & Biol. Eng. 14, 609–616.