1. Gitzelmann, R.: Hereditary galactokinase deficiency, a newly recognized cause of juvenile cataracts. Pediat. Res.1, 14 (1967).
2. Thalhammer, O., R. Gitzelmann, and M. Pantlitschko: Hypergalactosemia and galactosuria due to galactokinase deficiency in a newborn. Pediat. (St. Louis)42, 441 (1968).
3. Weinberg, A. N.: Detection of congenital galactosemia and the carrier state using galactose C14 and blood cells. Metabolism 10, 728 (1961).
4. Won G. Ng, G. N. Donnell, and W. R. Bergen: Galactokinase activity in human erythrocytes of individuals at different ages. J. Lab. clin. Med.66, 115 (1965).