Adams, R. (1941-2). Harvey Lectures, 37, 168.
----And others (1941). J. Amer. chem. Soc., 63, 1971.
----Baker, B.R., and Wearn, T.B. (1940). Ibid., 62, 2204.
Alientuck, S., and Bowman, K.M. (1942). Amer. J. Psychiatry, 99, 248.
Ghosh, R., Todd, A. R., and Wilkinson, S. (1940). J. chem. Soc., pp. 1121, 1893.

Himmelsbach, C. K. (1944). Sth. med. J., Nashville, 37, 26.
----And Andrews, H. L. (1943). J. Pharmacol., 77, 17.
Russell, P.B., and others (1941). J. chem. Soc., p. 826.
Stockings, G. T. (1944). J. ment. Sci., 90, 772.