1. Cahn, R. S., Ingold, C. K., Prelog, V.: Angew. Chem. Int. Ed. (Engl.) 5, 385 (1966)
2. Prelog, V., Helmchen, G.: ibid, in press
3. see, however, Hirschmann, H., Hanson, K.: Topics in Stereochemistry, Vol. 14, in press for a discussion of the adequacy of these terms
4. Hirschmann, H., Hanson, K. R.: Tetrahedron 30, 3649 (1974)
5. Hanson, K. R.: J. Am. Chem. Soc. 88, 2731 (1966)