Kurzer, M.S. and Xu, X., 1999. Dietary Phytoestrogens. Annual Reviews of Nutrition, 17, 353–381.

Adlercreutz, H, 1995. Phyto-oestrogens: Epidemiology and a Possible Role in Cancer Protection. Environmental Health Perspectives, 103 (Suppl. 7), 103–112; Adlercreutz, H., Mazur, W., Bartels, P., Elomaa, V.-V., Watanabe, S., Wahala, K., Landstrom, M., Lundin, E., Bergh, A., Damber, J.-E., Aman, P., Widmark, A., Johansson, A., Zhang, J.-X. and Hallmans, G., 2000. Phytooestrogens and Prostate Disease. J. Nutr., 130, 658S-659S.