1. Hanafusa, H., and Akabori, S., Bull. Chem. Soc. Japan, 32, 626 (1959).
2. Paecht-Horowitz, M., Berger, J., and Katchalsky, A., Nature, 228, 636 (1970).
3. Burton, F. G., Newman, M. W., and Newman, W. F., Currents in Modern Biology, 3, 20 (1969).
4. Newman, M. W., Newman, W. F., and Burton, F. G., Currents in Modern Biology, 3, 69 (1969).
5. Burton, F. G., and Newman, W. F., Currents in Modern Biology, 4, 47 (1971).