article 1986 A possible mechanism of action of danazol and an ethinylestradiol/ norgestrel combination used as postcoital contraceptive agents ·doi:10.1016/0010-7824(86)90042-9
article 1983 Side effects of danazol compared with an ethinyloestradiol/norgestrel combination when used for postcoital contraception ·doi:10.1016/0010-7824(83)90054-9