1. J.R. Parrat: Adv. Drug Res. 9, 103 (1974)
2. B.F. Robinson: Adv. Drug Res.1093 (1975).
3. R. Zelis, D.T. Mason, E.D. Amsterdom and J.F. Green, in: K.L. Melmon and A.N. Breast(eds.): Cardiovascular Drug Therapy, F.A. Davis, Philadelphia 1974, 239.
4. C.K. Mittal and E Murad, in: J.A. Nathansons and J.W. Kebabian (eds.): Handbook of Experimental Pharmacology, Vol. 58, Springer-Verlag, Berlin 1982, 225.
5. R.M. Rapaport and E Murad: J. Cyclic Nucleotide Protein Phosphorylation Res. 9, 281 (1983).