1. Cuatrecasas, P., Biochem. Pharmac., 23, 2353–2361 (1974).
2. King, R. J. B., and Mainwaring, W. I. P., Steroid–Cell Interations (Butterworths London, 1974).
3. Jensen, E. V., and De Sombre, E. R., Science, 182, 126–134 (1973).
4. Advances in Experimental Medicine and Biology,1973
5. O'Malley, B. W., et al., Rec. Prog. Hormone Res., 25, 105–153 (1969).