1. T. W. Greene, Protecting Groups in Organic Synthesis, Wiley, New York (1981).
2. J. F. W. McOmie (ed.), Protective Groups in Organic Chemistry, Plenum Press, New York (1981).
3. D. Seebach, Angew. Chem. Int. Ed. Engl. 18, 239 (1979).
4. D. Lednicer, Adv. Org. Chem. Methods Results 8, 179 (1972).
5. H. S. Mosher and J. D. Morrison, Asymmetric Organic Reactions, second edition, American Chemical Society, Washington (1976).