S. Koutsopoulos, “Synthesis and Characterization of Hydroxyapatite Crystals: A Review Study on the Analytical Methods,” Journal of Biomedical Materials Research Part A, Vol. 62, No. 4, 2002, pp. 600-612.
 W. W. Thein-Han and R. D. K. Misra, “Biomimetic Chitosan-Nanohydroxyapatite Composite Scaffolds for Bone Tissue Engineering,” Acta Biomaterialia, Vol. 5, No. 4, 2009, pp. 1182-1197. doi:10.1016/j.actbio.2008.11.025
 C. Tsioptsias, I. Tsivintzelis, L. Papadopoulou and C. Panayiotou, “A Novel Method for Producing Tissue Engineering Scaffolds from Chitin, Chitin-Hydroxyapatite, and Cellulose,” Materials Science and Engineering C, Vol. 29, No. 1, 2009, pp. 159-164.
 Y. Torrent-Burgués, J. Gómez-Morales, A. López-Macipe, and Y. A. Rodríguez-Clemente, “Continuous Precipitation of Hydroxyapatite from Ca/Citrate/Phosphate Solutions Using Microwave Heating,” Crystal Research and Technology, Vol. 34, No. 5-6, 1999, pp. 757-762.
 Z. H. Zhou, P. L. Zhou, S. P. Yang, X. B. Yu and L. Z. Yang, “Controllable Synthesis of Hydroxyapatite Nanocrystals via a Dendrimer-Assisted Hydrothermal Process,” Yang, Materials Research Bulletin, Vol. 42, No. 9, 2007, pp. 1611-1618.
 S. Kannan, J. H. G. Rocha, S. Agathopoulos and J. M. F. Ferreira, “Fluorine-Substituted Hydroxyapatite Scaffolds Hydrothermally Grown from Aragonitic Cuttlefish Bones,” Acta Biomaterialia, Vol. 3, No. 2, 2007, pp. 243-249. doi:10.1016/j.actbio.2006.09.006
 A. Wang, D. Liu, H. Yin, H. Wu, Y. Wada, M. Ren, T. Jiang, X. Cheng and Y. Xu, “Size-Controlled Synthesis of Hydroxyapatite Nanorods by Chemical Precipitation in the Presence of Organic Modifiers,” Materials Science and Engineering: C, Vol. 27, No. 4, 2007, pp. 865-869.
 A. Banerjee, A. Bandyopadhyay and S. Bose, “Hydroxyapatite Nanopowders: Synthesis, Densification and Cell- Materials Interaction,” Materials Science and Engineering: C, Vol. 27, No. 4, 2007, pp. 729-735.
 Y. X. Pang and X. Bao, “Influence of Temperature, Ripening Time and Calcination on the Morphology and Crystallinity of Hydroxyapatite Nanoparticles,” Journal of the European Ceramic Society, Vol. 23, No. 10, 2003. pp. 1697-1704.
 H. Yu, H. Zhang, X. Wang, Z. Gu, X. Li and F. Deng, “Local Structure of Hydroxy-Peroxy Apatite: A Combined XRD, FT-IR, Raman, SEM, and Solid-State NMR Study,” Journal of Physics and Chemistry of Solids, Vol. 68, No. 10, 2007, pp. 1863-1871.
 C. L. Martin, G. Delette and D. Bouvard, “Discrete Element Simulations of the Compaction of Aggregated Ceramic Powders,” Journal of the American Chemical Society, Vol 89, No. 11, 2006, pp. 3379-3387.
 K. P. Sanosh, M. C. Chu, A. Balakrishnan, Y. J. Lee, T. N. Kim and S. J. Cho, “Synthesis of Nano Hydroxyapatite Powder That Simulate Teeth Particle Morphology and Composition,” Current Applied Physics, Vol. 9, No. 6, 2009, pp.1459-1462.
 I. Zizak, O. Paris, P. Roschger, S. Bernstorff, H. Amenitsch, K. Klaushofer and P. Fratzl, “Investigation of Bone and Cartilage By Synchrotron Scanning-SAXS and -WAXD with Micrometer Spatial Resolution,” Journal of Applied Crystallography, Vol 33, No. 1, 2000, pp. 820-823. doi:10.1107/S0021889800001321
 C. J?ger, T. Welzel, W. Meyer-Zaika and M. Epple, “A Solid-State NMR Investigation of the Structure of Nanocrystalline Hydroxyapatite,” Magnetic Resonance in Chemistry, Vol. 44, No. 6, 2006, pp. 573-580. doi:10.1002/mrc.1774
 A. Zanotto, R. Matassa, M. L. Saladino, M. Berrettoni, M. Giorgetti, S. Zamponi and E. Caponetti, “Cobalt Hexacyanoferrate—Poly(Methyl Methacrylate) Composite: Synthesis and Characterization,” Materials Chemistry and Physics, Vol. 120, No. 1, 2010, pp. 118-122. doi:10.1016/j.matchemphys.2009.10.032
 E. Fratini, M. G. Page, R. Giorgi, H. C?lfen, P. Baglioni, B. Demé and T. Zembo, “Competitive Surface Adsorption of Solvent Molecules and Compactness of Agglomeration in Calcium Hydroxide,” Nanoparticles Langmuir, Vol. 23, No. 5, 2007, pp. 2330-2338. doi:10.1021/la062023i