1. McClare, C. W. F., Nature, 240, 88 (1972).
2. George, P., and Rutman, R. J., Progr. Biophys., 10, 2 (1960).
3. Phillips, R. C., George, P., and Rutman, R. J., J. Biol. Chem., 244, 3330 (1969).
4. Zener, C., Proc. Roy. Spc., A, 137, 696 (1932).
5. Landau, L. D., and Lifshits, E. M., Quantum Mechanics, 325 (Pergamon, 1965).