1. Bonavita, V., Scarano, E., and Zito, M. Acta Neurol. 16: 493 (1961).
2. Mandel, P., and Weill, J.D. J. Physiol. (Paris) 54: 190 (1962).
3. Piccoli, F., Camarda, R. and Bonavita, V. J. Neurochem. 16: 159 (1969).
4. Piccoli, F., Camarda, R., and Bonavita, V. In preparation (1970a).
5. Guarnen’, R., Piccoli, F., Camarda, R., and Bonavita, V. In preparation (1970).