article 1987 Ovarian stromal and luteal tissue prostaglandins, 17β-estradiol, and progesterone in relation to the phases of the menstrual cycle in women ·doi:10.1016/0002-9378(87)90363-2
article 1981 Myometrial prostaglandins during the human menstrual cycle ·doi:10.1016/s0002-9378(16)32639-4