1. Bothwell, T. H., Finch, C. A.: Iron Metabolism. Boston: Little and Brown 1962.
2. Briggs, J. D., Kennedy, A. C, Goldberg, A.: Urinary white cell excretion after iron-sorbitol-citric acid. Brit. med. J.1962 II352.
3. Brise, H., Hallberg, L.: Iron absorption studies.IIAbsorbality of different iron compounds. Acta med. scand. 171(Suppl.)376 (1962)
4. Callender, S. T., Mallet, B. J., Smith, M. D.: Absorption of haemoglobin iron. Brit. J. Haemat.3 186 (1957)
5. Crosby, W. H.: Iron and Anemia. Disease-a-Month. Chicago: Year Book Publ. 1966.