1. Rapid methods of rock analysis used by the Analytical Chemistry Section;Beaulne,1962
2. The atomic structure of fluorapatite and its relation to that of tooth and bone material;Beevers;Min. Mag.,1946
3. Considerations nouvelles sur la constitution possible de phosphate tricalcique hydrate;Brasseur;Bull. Acad. Roy. Belgique, Classe Sci., Ser. 5,1958
4. Beitrage zur kenntnis der kalk-phosphorsaüre Verbindungen, II;Bhedig;Z. Elektrochem.,1933
5. The geochemistry of apatite;Gruft,1962