1. Roentgen-ray diffraction studies of enamel and dentine;Bale;Am. J. Roentgenol. Radium Therapy,1934
2. X-ray crystallographic studies on apatites and calcified structures;Carlström;Acta Radiol.,1955
3. The size and shape of the apatite crystallites in bone as determined from line broadening measurements on oriented specimens;Carlström;Biochim. et Biophys. Acta,1959
4. Données récentes sur l'infrastructure de la dent fournies par les techniques de la microscopie électronique;Frank;Arch. stomatol.,1952
5. Elektronenmikroskopische Strukturuntersuchungen an gesunden und kranken Zähnen;Helmcke;Deut. zahnärztl. Z.,1955