1. Adams, B. (1960). Lancet, 1, 207.
2. In Neurological and Psychological Deficits of Asphyxia Neonatorum;Bailey, C.J.;Brit. J. Pharmacol,1958
3. Brodie, B. B., Spector, S., Kuntzman, R. G., and Shore, P. A. (1958). Naturwissenschaften, 45, 243.
4. Erspamer, V., and Testini, A. (1959). J. Pharm. (Lond.), 11, 618.
5. Hardisty, R. M., and Stacey, R. S. (1955). J. Physiol. (Lond.), 130, 711.