1. Studies on mineralised dental tissues;Bergman;Acta odont. Scand.,1954
2. Enamel caries. Observations on the histology and pattern of progress of the approximal lesion;Crabb;Br. dent. J.,1966
3. Studies of the early lesion of enamel caries, its nature, mode of spread and points of entry;Darling;Br. dent. J.,1958
4. The structure of human dental enamel;Gustafson;Odont. Tidskr.,1945