1. Widdas W. F., Transport mechanisms in the foetus. Br. med. Bull. 17, 107–111 (1961).
2. Štembera Z. K. and Hodr J., I. The relationship between the blood levels of glucose, lactic acid and pyruvic acid in the mother and both umbilical vessels of the healthy fetus. Biol. Neonat. 10, 227–238 (1966).
3. Štembera Z. K. and Hodr J. II. Mutual relationships between the levels of glucose, pyruvic acid and lactic acid in the blood of the mother and of both umbilical vessels in hypoxic fetuses. Biol. Neonat. 10, 303–315 (1966).
4. Štembera Z. K., Hodr J. and Janda J., Differences in metabolism of healthy and hypoxic foetuses rated according to the arteriovenous difference in oxygen, glucose, lactic acid and pyruvic acid contents in the umbilical vessels and to the amount of blood flowing through the umbilical cord. In: Intra-uterine dangers to the foetus, pp. 77–83 (ed. J. Horsky and Z. K. Štembera). Excerpta Medica, Amsterdam 1967.
5. Thomas K., Gasparo M. de, and Hoet J. J., Insulin levels in the umbilical vein and in the umbilical artery of newborns of normal and gestational diabetic mothers. Diabetologia 3, 299–304 (1967).