1. Ajmone-Marsan, C., e M. G. F. Fuortes: Il Lavoro Neuropsich. 2, 314 (1947).
2. Atanackovic, D., et. Sv. Dalgaard-Mikkelsen: Arch. internat. Pharmacodynamie 85, 1 (1951).
3. Bovet, D., and V. G. Longo: Electroencephalogr. Clin. Neurophysiol. 5, 225 (1953).
4. Bradley, P. B., and J. Elkes: J. of Physiol. 120, 14 P (1953).
5. Bradley, P. B., S. Cerquiglini and J. Elkes: J. of Physiol. 121, 51 P (1953).