1. Ogston, A. G.: Nature162, 963 (1948).
2. Hanson, K. R.: J. Amer. Chem. Soc.88, 2731 (1966).
3. Cahn, R. S., Ingold, C., Prelog, V.: Angew. Chem.78, 413 (1966); Angew. Chem., Intern. Ed.5, 385 (1966).
4. For some reviews see: Levy, H. R., Talalay, P., Vennesland, B., in: Progress in Stereochemistry. By P. B. D. de la Mare and W. Klyne. London: Butterworths 1962. Vol. 3, p. 299.
5. Cornforth, J. W., Ryback, G.: Ann. Rep. Progr. Chem.42, 428 (1965).