1. Estrogens (ch. 15), androgens (ch. 16), progestagens (ch. 17), homo and nor-steroids (ch. 18), adrenocortical hormones (ch. 19);Fieser,1959
2. Sir Robert Robinson: a contemporary historical assessment and a personal memoir;Birch,1976
3. The total synthesis of steroids;Birch;Rev Pure Appl Chem (RACI),1953
4. Experiments on the synthesis of substances related to the sterols XXII x-norequilenin methyl ether;Koebner;J Chem Soc,1938