1. Blomback, M., Blomback, B., Olsson, B., William-Olsson, G., Senning, A.: Acta chir. scand., Suppl.245, 259–264 (1959).
2. Bouvier, C. A., Berthoud, S., Koralnik, O., Roth, H. W.: E.D.T.A. Proceedings3, 309 (1966).
3. Comar, C. L.: Radioisotopes in Biology and Agriculture, S. 21. New York-London: McGraw-Hill 1955.
4. Danishefsky, J., Eiber, H. B.: Arch. Biochem.85, 53–61 (1959).
5. Dost, F. H.: Z. ges. inn. Med.9, 546–550 (1954).