1. Andersen,P., Gillow,M., Rudjord, T.: J. Physiol. (Lond.) 185, 418 (1966).
2. Anninos,P.A.: Doctoral dissertation: Syracuse University, Syracuse, N.Y. 1969.
3. —, Beek, B., Csermely, T.J., Harth, E.M., Pertile, G.: J. theor. Biol. 26, 121 (1970).
4. Asanuma, H., Sakata, H.: J. Neurophysiol. 30, 35 (1967).
5. Bullock, T.H.: In: Bullock, T.H., Horridge, G. A. (Eds.): Structure and function in the nervous system of invertebrates, Vol. 1, pp. 179–251. San Francisco: W. H. Freeman and Co. 1965.