1. B. Katz (1966) Nerve, Muscle and Synapse, McGraw-Hill, New York
2. L. Iverson (1970) in: The Neurosciences Second Study Program, Rockefeller University Press, New York, pp. 768–782
3. Nachmansohn (1970) Science, 168: 1059
4. T. C. Ruch & H. D. Patton (1973) Physiology and Biophysics, W. B. Saunders, Philadelphia
5. H. H. Dale (1914) J. Pharmac, 6: 147