1. J. A. Gallant, Ann. Rev. Genet.,13, 393 (1979).
2. P. Zamecnik, Anal. Biochem.,134, 1 (1983).
3. A. Ullman, A. Danchin, Adv. Cyclic Nucleotide Res.,15, 1 (1983).
4. M. L. Pall in “Current Topics in Cellular Regulation”, Vol.25,E. Horecker,E. R. Stadtman, eds. Academic Press, Orlando: 1985, p. 1.
5. A. S. Bagnara, L. R. Finch, Anal. Biochem.,45, 24 (1972).