1. R.D. O’Brien, Insecticide Action and Metabolism, Academic Press, N.Y. (1967).
2. T. Narahashi and H.G. Hass, J. Gen. Physiol., 51, 177 (1968).
3. B. Hille, J. Gen. Physiol., 51, 191 (1968).
4. B.D. Hilton and R.D. O’Brien, Science, 168, 841 (1970).
5. G. Holan, Nature, 221, 1025 (1969).