1. Hope, D.B., Schacter, B.A. & Frankland, B.T.B. (1964). Biochem. J. 93, 7P.
2. Acher, R., Chauvet, J. & Olivry, G. (1956). Biochim. Biophys. Acta, 22, 421.
3. van Dyke, H.B., Chow, B.F., Greep, R.O. & Rothen, A. (1942). J, Pharmacol., 74, 190.
4. Landgrebe, F.W., Ketterer, B. de Waring, H. (1955). In: The Hormones, Vol. 111 Eds. Pincus, G. & Thimann, K.V. Academic Press, New York pp 389–431.
5. Ginsburg, M. & Smith, M.W. (1959). Brit. J. Pharmacol. 14, 327.