article 1986 The biochemistry of human endometrium after two regimens of postcoital contraception: a dl-norgestrel/ethinylestradiol combination or danazol ·doi:10.1016/s0015-0282(16)49279-4
article 1977 The Role of Prostaglandins in the Spontaneous Motility of the Fallopian Tube ·doi:10.1016/s0015-0282(16)42322-8