1. The distribution of fluoride in human enamel;Brudevold;J. dent. Res.,1956
2. Studies of the early lesion of enamel caries with transmitted light, polarised light and radiography;Darling;Brit. dent. J.,1956
3. Studies of the early lesion of enamel caries with transmitted light, polarised light and radiography;Darling;Brit. dent. J.,1956
4. Quantitative micro and histochemical elementary analysis by roentgen absorption spectrography;Engström;Acta Radiol.,1946