1. Ericsson, Y., Gydel, K., Hammersköld, T.: Skeletal fluoride saturation and body fluid fluoride levels. Abstract858, IADR (1973)
2. Hodge, H. C., Smith, F. A.: Hard tissue metabolism of fluoride. In: Fluorine chemistry (Simons, J. H., ed.), p. 517–519. New York: Academic Press 1965
3. Hodge, H. C., Smith, F. A.: Metabolism of inorganic fluoride. In: Fluorine chemistry (Simons, J. H., ed.), p. 137–176. New York: Academic Press 1965
4. Huntsberger, D. V., Leaverton, P. E.: Regression and correlation. In: Statistical inference in the biomedical sciences, vol. IV, p. 182–184, 249. Boston: Allyn and Bacon, Inc. 1970
5. McCann, H. G.: Determination of fluoride in mineralized tissues using the fluoride ion electrode. Arch. oral Biol.13, 475 (1968)