1. Armstrong, C. F., Huxley, A. F., Julian, F. J.: Oscillatory responses in frog skeletal muscle fibres. J. Physiol. (London) 186, 26–27 P (1966).
2. Bawa, P., Stein, R. B.: Properties of human soleus muscle and the associated feedback loop. J. Physiol. (London) in press.
3. Bawa. P., Mannard. A., Stein, R. B.: a) Effects of elastic loads on the contractions of cat muscles. J. Physiol. (London) in press, b) Predictions and experimental tests of a visco-elastic muscle using elastic and inertial loads. J. Physiol. (London) in press.
4. Bellman, R., Cooke, K. L.: Differential-Difference Equations. New York-London: Academic Press 1963.
5. Bronk, D. W., Ferguson, L. K.: The nervous control of intercostal respiration. Am. J. Physiol. 110, 700–707 (1935).