References

1. N. K. Kochetkov and E. I. Budovskii, Organic Chemistry of Nucleic Adids. Plenum Press, London-N.Y (1972).

2. A. M. Michelson, The Chemistry of Nucleosides and Nucleotides. Academic Press, N.Y-London (1963).

3. T.L.Y Ulbricht, in: Comprehensive Biochemistry. Vo. 8, M. Florkin and E.H. Stotz (Eds.), Elsevier, Amsterdam-London-N.Y, pp. 158-208 (1963).

4. D. O. Jordan, The Chemistry of Nucleic Acids. Butterworths, London-Washington, p. 358 (1960).

5. R. W Chambers, in: Progress in Nucleic Acid Res. and Mol. Biol. Vol. 5, J. N. Davidson and W E. Cohn (Eds.), Academic Press, N.Y -London, pp. 349-398 (1966).

6. R. Shapiro, in: Progress in Nucleic Acid Res. and Mol. Biol. Vol. 8, J. N. Davidson and W E. Cohn (Eds.), Academic Press, London, pp. 73-112 (1968).