1. 1. K. Sudarsanan and R. A. Young , “Significant Precision in Crystal Structural Details. Holly SPRINGS Hydroxyapatite,” Acta Crystallogr. Sec. B, 25 [8] 1534-1543 (1969).
2. 2. E. Kaoutar , M. Kacimi , M. Ziyad , S. Ammar , and F. Bozon-Verduraz , “Cobalt-Exchanged Hydroxyapatite Catalysts: Magnetic Studies, Spectroscopic Investigations, Performance in 2-Butanol and Ethane Oxidative Dehydrogenations,” J. Catal., 226 [1] 16-24 (2004).
3. 3. E. I. Get'man , S. N. Loboda , T. V. Tkachenko , A. V. Ignatov , and T. F. Zabirko , “Substitution of Calcium with Neodymium and Dysprosium in Hydroxyapatite Structure,” Funct. Mater., 12 [1] 6-10 (2005).
4. 4. A. Lebugle , F. Pelle , C. Charvillat , I. Rousselot , and J. Y. Chane-Ching , “Colloidal and Monocrystalline Ln(3+) Doped Apatite Calcium Phosphate as Biocompatible Fluorescent Probes,” Chem. Commun., [6] 606-608 (2006).
5. 5. M. Misono and W. K. Hall , “Oxidation-Reduction Properties of Copper- and Nickel-Substituted Hydroxyapatites,” J. Phys. Chem., 77 [6] 791-800 (1972).