1. Feigelson, P., Beato, M, Colman, P., Kalimi, M, Killewich, A., Schutz, G.: Studies on the hepatic glucocorticoid receptor and the hormonal modulation of specific mRNA levels during enzyme induction. Rec. Progr. Horm. Res. 31, 213 (1975)
2. Friedberg, F.: Hormone receptors. Horiz. Biochem. Biophys. 4, 63 (1977)
3. Goldberg, N. D., Haddox, M. K.: Cyclic GMP. Metabolism and involvement in biological regulation. Ann. Rev. Biochem. 46, 823 (1977)
4. Insel, P. A.: Membrane active hormones: Receptors and receptor regulation. Int. Rev. Biochem. 20, 1 (1978)
5. Pastan, I. H., Johnson, G. S., Anderson, W. B.: Role of cyclic nucleotides in growth control. Ann. Rev. Biochem. 44, 491 (1975)