1. A. R. Cushny, Biological Relations of Optically Isomeric Substances ( Balliere, Tindall and Cox, 1926 ).
2. L. Pauling, in Enzymes: Units of Biological Structure and Function, ed. by O. H. Gaebler ( Academic Press Inc., New York 1956 ), p. 177.
3. A. R. Cushny, Biological Relations of Optically Isomeric Substances ( Balliere, Tindall and Cox, 1926 ).
4. L. Pauling, in Enzymes: Units of Biological Structure and Function, ed. by O. H. Gaebler ( Academic Press Inc., New York 1956 ), p. 177.
5. D. H. R. Barton, J. chem. Soc. 1953, 1027; D. H. R. Barton and R. C. Cookson, Quart. Rev. chem. Soc., Lond. 10, 44 (1956).