1. K. Heim (1931a). Hormonale wirkungen der frauenmilch.Klin. Wochenschr. 10:357.
2. K. Heim (1931b). Brustdrüse und hypophysenvorderlappen.Klin. Wochenschr. 10:1598.
3. N. Yaida (1929). Ovarial hormone in blood of pregnant women, of pregnant animals; ovarial hormone in urine of pregnant women; ovarial hormone in milk of pregnant animals.Trans. Jpn. Pathol. Soc. 19:39–101.
4. O. Koldovský (1995). Hormones in milk. In G. Litwack (ed.),Vitamins and Hormones (Chap. 2), Academic Press, New York,50:77–149.
5. O. Koldovský (1989). Critical review: Search for role of milkborne biologically active peptides for the suckling.J. Nutr. 119:1543–1551.