Anderson JJB, Anthony M, Messina M, Garner SC. Effects of phyto-oestrogens on tissues. Nutr Res Rev. 1999 Jun;12(01):75-116.
Johannes CB, Crawford SL, Longcope C, McKinley SM. Bleeding patterns and changes in the perimenopause: a longitudinal characterization of menstrual cycles. Clin Consultations Obstetr Gynecol. 1996;8:9-20.