1. Effects of certain 19-Nor steroids on the normal human menstrual cycle;Rock;Science,1956
2. The effect of norethisterone and its acetate on ovarian and pituitary function during the menstrual cycle;Brown;J. Endocr.,1962
3. The effects of sex steroids on gonadotropins;Vorys;Amer. J. Obstet. Gynec.,1965
4. Continuous administration of 500 mg. of chlormadinone acetate as a method of regulating fertility without inhibiting ovulation;Martínez-Manautou,1967
5. Urinary hormone excretion patterns in chlormadinone acetate treated patients and the associated cervical mucus changes;Elstein;Gaz. Méd. France,1968