1. The fluoride content of surface enamel from permanent and deciduous teeth;Weatherwell,1966
2. Crystal structure of hydroxyapatite;Kay;Nature,1964
3. Konzentration und Verteilung von Fluorid in Haifischzähnen;Büttner,1966
4. Dental calculus and fluoridation of the water;Houwink,1966
5. Effect of sodium fluoride on the growth of rats with varying vitamin and calcium intakes;Harkins;J Nutr,1963