1.            Santos MH, Oliveira Md, Souza LPdF, Mansur HS, Vasconcelos WL. Synthesis control and characterization of hydroxyapatite prepared by wet precipitation process. Materials Research. 2004;7(4):625-30.

2.            Kojima Y, Kitazawa K, Nishimiya N. Synthesis of nano-sized hydroxyapatite by ultrasound irradiation. Journal of Physics: Conference Series. 2012;339:012001.

3.            Masuda Y, Matubara K, Sakka S. Synthesis of Hydroxyapatite from Metal Alkoxides through Sot-Gel Technique. Journal of the Ceramic Society of Japan. 1990;98(1143):1255-66.

4.            Shirkhanzadeh M. Journal of Materials Science Materials in Medicine. 1998;9(2):67-72.

5.            Suchanek WL, Riman RE. Hydrothermal Synthesis of Advanced Ceramic Powders. Advances in Science and Technology. 2006;45:184-93.

6.            Cho JS, Kang YC. Nano-sized hydroxyapatite powders prepared by flame spray pyrolysis. Journal of Alloys and Compounds. 2008;464(1-2):282-7.

7.            Sivakumar M, Kumar TSS, Shantha KL, Rao KP. Development of hydroxyapatite derived from Indian coral. Biomaterials. 1996;17(17):1709-14.

8.            Siva Rama Krishna D, Siddharthan A, Seshadri SK, Sampath Kumar TS. A novel route for synthesis of nanocrystalline hydroxyapatite from eggshell waste. Journal of Materials Science: Materials in Medicine. 2007;18(9):1735-43.

9.            Murugan R, Ramakrishna S, Panduranga Rao K. Nanoporous hydroxy-carbonate apatite scaffold made of natural bone. Materials Letters. 2006;60(23):2844-7.

10.          Tampieri A, Sprio S, Ruffini A, Celotti G, Lesci IG, Roveri N. From wood to bone: multi-step process to convert wood hierarchical structures into biomimetic hydroxyapatite scaffolds for bone tissue engineering. Journal of Materials Chemistry. 2009;19(28):4973.

11.          Ozawa M, Suzuki S. Microstructural Development of Natural Hydroxyapatite Originated from Fish-Bone Waste through Heat Treatment. Journal of the American Ceramic Society. 2004;85(5):1315-7.

12.          Hassan MN, Mahmoud MM, El-Fattah AA, Kandil S. Microwave-assisted preparation of Nano-hydroxyapatite for bone substitutes. Ceramics International. 2016;42(3):3725-44.

13.          Kumar GS, Thamizhavel A, Girija EK. Microwave conversion of eggshells into flower-like hydroxyapatite nanostructure for biomedical applications. Materials Letters. 2012;76:198-200.

14.          Lerner E, Sarig S, Azoury R. Enhanced maturation of hydroxyapatite from aqueous solutions using microwave irradiation. Journal of Materials Science: Materials in Medicine. 1991;2(3):138-41.

15.          Aerssens J, Boonen S, Lowet G, Dequeker J. Interspecies Differences in Bone Composition, Density, and Quality: Potential Implications forin VivoBone Research1. Endocrinology. 1998;139(2):663-70.

16.          Sivakumar M, Kumar TSS, Shantha KL, Rao KP. Development of hydroxyapatite derived from Indian coral. Biomaterials. 1996;17(17):1709-14.

17.          Ozawa M, Suzuki S. Microstructural Development of Natural Hydroxyapatite Originated from Fish-Bone Waste through Heat Treatment. Journal of the American Ceramic Society. 2004;85(5):1315-7.

18.          Lee SJ, Oh SH. Fabrication of calcium phosphate bioceramics by using eggshell and phosphoric acid. Materials Letters. 2003;57(29):4570-4.

19.          Murugan R, Ramakrishna S. Crystallographic Study of Hydroxyapatite Bioceramics Derived from Various Sources. Crystal Growth & Design. 2005;5(1):111-2.

20.          Kim YH, Song H, Riu DH, Kim SR, Kim HJ, Moon JH. Preparation of porous Si-incorporated hydroxyapatite. Current Applied Physics. 2005;5(5):538-41.

21.          Siva Rama Krishna D, Siddharthan A, Seshadri SK, Sampath Kumar TS. A novel route for synthesis of nanocrystalline hydroxyapatite from eggshell waste. Journal of Materials Science: Materials in Medicine. 2007;18(9):1735-43.

22.          Ruksudjarit A, Pengpat K, Rujijanagul G, Tunkasiri T. Synthesis and characterization of nanocrystalline hydroxyapatite from natural bovine bone. Current Applied Physics. 2008;8(3-4):270-2.

23.          Sobczak A, Kida A, Kowalski Z, Wzorek Z. Evaluation of the biomedical properties of hydroxyapatite obtained from bone waste. Polish Journal of Chemical Technology. 2009;11(1):37-43.

24.          Barakat NAM, Khil MS, Omran AM, Sheikh FA, Kim HY. Extraction of pure natural hydroxyapatite from the bovine bones bio waste by three different methods. Journal of Materials Processing Technology. 2009;209(7):3408-15.

25.          Javidi M, Javadpour S, Bahrololoom ME, Ma J. Electrophoretic Deposition of Natural Hydroxyapatite. Key Engineering Materials. 2009;412:183-8.

26.          Nayar S, Guha A. Waste utilization for the controlled synthesis of nanosized hydroxyapatite. Materials Science and Engineering: C. 2009;29(4):1326-9.

27.          Sanosh KP, Chu M-C, Balakrishnan A, Kim TN, Cho S-J. Utilization of biowaste eggshells to synthesize nanocrystalline hydroxyapatite powders. Materials Letters. 2009;63(24-25):2100-2.

28.          Álvarez-Lloret P, Rodríguez-Navarro AB, Falini G, Fermani S, Ortega-Huertas M. Crystallographic Control of the Hydrothermal Conversion of Calcitic Sea Urchin Spine (Paracentrotus lividus) into Apatite. Crystal Growth & Design. 2010;10(12):5227-32.

29.          Figueiredo M, Fernando A, Martins G, Freitas J, Judas F, Figueiredo H. Effect of the calcination temperature on the composition and microstructure of hydroxyapatite derived from human and animal bone. Ceramics International. 2010;36(8):2383-93.

30.          Meski S, Ziani S, Khireddine H. Removal of Lead Ions by Hydroxyapatite Prepared from the Egg Shell. Journal of Chemical & Engineering Data. 2010;55(9):3923-8.

31.          Wu S-C, Hsu H-C, Wu Y-N, Ho W-F. Hydroxyapatite synthesized from oyster shell powders by ball milling and heat treatment. Materials Characterization. 2011;62(12):1180-7.

32.          Wu S-C, Tsou H-K, Hsu H-C, Hsu S-K, Liou S-P, Ho W-F. A hydrothermal synthesis of eggshell and fruit waste extract to produce nanosized hydroxyapatite. Ceramics International. 2013;39(7):8183-8.

33.          Yoganand CP, Selvarajan V, Goudouri OM, Paraskevopoulos KM, Wu J, Xue D. Preparation of bovine hydroxyapatite by transferred arc plasma. Current Applied Physics. 2011;11(3):702-9.

34.          Nirmala R, Sheikh FA, Kanjwal MA, Lee JH, Park S-J, Navamathavan R, et al. Synthesis and characterization of bovine femur bone hydroxyapatite containing silver nanoparticles for the biomedical applications. Journal of Nanoparticle Research. 2010;13(5):1917-27.

35.          Boutinguiza M, Pou J, Comesaña R, Lusquiños F, de Carlos A, León B. Biological hydroxyapatite obtained from fish bones. Materials Science and Engineering: C. 2012;32(3):478-86.

36.          Kusrini E, Sontang M. Characterization of x-ray diffraction and electron spin resonance: Effects of sintering time and temperature on bovine hydroxyapatite. Radiation Physics and Chemistry. 2012;81(2):118-25.

37.          Habib F, Alam S, Zahra N, Irfan M, Iqbal W. Synthesis route and characterization of hydroxyapatite powder prepared from waste egg shells. Journal of the Chemical Society of Pakistan. 2012 30;34(3).

38.          Kumar GS, Thamizhavel A, Girija EK. Microwave conversion of eggshells into flower-like hydroxyapatite nanostructure for biomedical applications. Materials Letters. 2012;76:198-200.

39.          Elizondo-Villarreal N, Martínez-de-la-Cruz A, Guerra RO, Gómez-Ortega JL, Torres-Martínez LM, Castaño VM. Biomaterials from Agricultural Waste: Eggshell-based Hydroxyapatite. Water, Air, & Soil Pollution. 2012;223(7):3643-6.

40.          Li S, Wang J, Jing X, Liu Q, Saba J, Mann T, et al. Conversion of Calcined Eggshells into Flower-Like Hydroxyapatite Agglomerates by Solvothermal Method Using Hydrogen Peroxide/N,N-Dimethylformamide Mixed Solvents. Journal of the American Ceramic Society. 2012;95(11):3377-9.

41.          Goloshchapov DL, Kashkarov VM, Rumyantseva NA, Seredin PV, Lenshin AS, Agapov BL, et al. Synthesis of nanocrystalline hydroxyapatite by precipitation using hen's eggshell. Ceramics International. 2013;39(4):4539-49.

42.          Piccirillo C, Silva MF, Pullar RC, Braga da Cruz I, Jorge R, Pintado MME, et al. Extraction and characterisation of apatite- and tricalcium phosphate-based materials from cod fish bones. Materials Science and Engineering: C. 2013;33(1):103-10.

43.          Nasiri-Tabrizi B, Fahami A, Ebrahimi-Kahrizsangi R. A comparative study of hydroxyapatite nanostructures produced under different milling conditions and thermal treatment of bovine bone. Journal of Industrial and Engineering Chemistry. 2014;20(1):245-58.

44.          Pramanik S, Hanif A, Pingguan-Murphy B, Abu Osman N. Morphological Change of Heat Treated Bovine Bone: A Comparative Study. Materials. 2012;6(1):65-75.

45.          Shariffuddin JH, Jones MI, Patterson DA. Greener photocatalysts: Hydroxyapatite derived from waste mussel shells for the photocatalytic degradation of a model azo dye wastewater. Chemical Engineering Research and Design. 2013;91(9):1693-704.

46.          Chaudhuri B, Mondal B, Modak DK, Pramanik K, Chaudhuri BK. Preparation and characterization of nanocrystalline hydroxyapatite from egg shell and K2HPO4 solution. Materials Letters. 2013;97:148-50.

47.          Ho W-F, Hsu H-C, Hsu S-K, Hung C-W, Wu S-C. Calcium phosphate bioceramics synthesized from eggshell powders through a solid state reaction. Ceramics International. 2013;39(6):6467-73.

48.          Giraldo-Betancur AL, Espinosa-Arbelaez DG, Real-López Ad, Millan-Malo BM, Rivera-Muñoz EM, Gutierrez-Cortez E, et al. Comparison of physicochemical properties of bio and commercial hydroxyapatite. Current Applied Physics. 2013;13(7):1383-90.

49.          Rakmae S, Lorprayoon C, Ekgasit S, Suppakarn N. Influence of Heat-Treated Bovine Bone-Derived Hydroxyapatite on Physical Properties andin vitroDegradation Behavior of Poly (Lactic Acid) Composites. Polymer-Plastics Technology and Engineering. 2013;52(10):1043-53.

50.          Shavandi A, Wilton V, Bekhit AE-DA. Synthesis of macro and micro porous hydroxyapatite (HA) structure from waste kina ( Evechinus chloroticus ) shells. Journal of the Taiwan Institute of Chemical Engineers. 2016;65:437-43.

51.          Patel S, Wei S, Han J, Gao W. Transmission electron microscopy analysis of hydroxyapatite nanocrystals from cattle bones. Materials Characterization. 2015;109:73-8.

52.          Rahman MM, Netravali AN, Tiimob BJ, Apalangya V, Rangari VK. Bio-inspired “green” nanocomposite using hydroxyapatite synthesized from eggshell waste and soy protein. Journal of Applied Polymer Science. 2016;133(22):n/a-n/a.

53.          Kumar GS, Girija EK, Venkatesh M, Karunakaran G, Kolesnikov E, Kuznetsov D. One step method to synthesize flower-like hydroxyapatite architecture using mussel shell bio-waste as a calcium source. Ceramics International. 2017;43(3):3457-61.

54.          Sunil BR, Jagannatham M. Producing hydroxyapatite from fish bones by heat treatment. Materials Letters. 2016;185:411-4.

55.          Kongsri S, Janpradit K, Buapa K, Techawongstien S, Chanthai S. Nanocrystalline hydroxyapatite from fish scale waste: Preparation, characterization and application for selenium adsorption in aqueous solution. Chemical Engineering Journal. 2013;215-216:522-32.

56.          Huang Y-C, Hsiao P-C, Chai H-J. Hydroxyapatite extracted from fish scale: Effects on MG63 osteoblast-like cells. Ceramics International. 2011;37(6):1825-31.

57.          Venkatesan J, Qian ZJ, Ryu B, Thomas NV, Kim SK. A comparative study of thermal calcination and an alkaline hydrolysis method in the isolation of hydroxyapatite fromThunnus obesusbone. Biomedical Materials. 2011;6(3):035003.

58.          Coelho TM, Nogueira ES, Steimacher A, Medina AN, Weinand WR, Lima WM, et al. Characterization of natural nanostructured hydroxyapatite obtained from the bones of Brazilian river fish. Journal of Applied Physics. 2006;100(9):094312.

59.          Ivankovic H, Tkalcec E, Orlic S, Gallego Ferrer G, Schauperl Z. Hydroxyapatite formation from cuttlefish bones: kinetics. Journal of Materials Science: Materials in Medicine. 2010;21(10):2711-22.

60.          Katchova AL. Peter J. Barry and Paul N. Ellinger. Financial Management in Agriculture (7th ed.).Upper Saddle River, NJ: Prentice Hall, 2012, 408 pp., ISBN 9780135037591. $97. Agribusiness. 2012;28(2):239-40.

61.          Howie RA. (H.) Lipson and (H.) Steeple Interpretation of X-ray powder diffraction patterns. London (Macmillan) and New York (St. Martins Press), 1970. viii+335 pp., 129 figs., 3 pls. Price £4£00. Mineralogical Magazine. 1972;38(299):907.

62.          Reza Khayati G, Dalvand H, Darezereshki E, Irannejad A. A facile method to synthesis of CdO nanoparticles from spent Ni–Cd batteries. Materials Letters. 2014;115:272-4.

63.          Sanghi R. Microwave irradiation. Resonance. 2000;5(3):77-81.

64.          Bowen CR, Gittings J, Turner IG, Baxter F, Chaudhuri JB. Dielectric and piezoelectric properties of hydroxyapatite-BaTiO3 composites. Applied Physics Letters. 2006;89(13):132906.

65.          Posner AS. Crystal chemistry of bone mineral. Physiological Reviews. 1969;49(4):760-92.

66.          Wang Y, Azaïs T, Robin M, Vallée A, Catania C, Legriel P, et al. The predominant role of collagen in the nucleation, growth, structure and orientation of bone apatite. Nature Materials. 2012;11(8):724-33.

67.          Khayati GR, Janghorban K. An investigation on the application of process control agents in the preparation and consolidation behavior of nanocrystalline silver by mechanochemical method. Advanced Powder Technology. 2012;23(6):808-13.

68.          Siddharthan A, Seshadri SK, Kumar TSS. Microwave accelerated synthesis of nanosized calcium deficient hydroxyapatite. Journal of Materials Science: Materials in Medicine. 2004;15(12):1279-84.

69.          Siddharthan A, Sampath Kumar TS, Seshadri SK. Synthesis and characterization of nanocrystalline apatites from eggshells at different Ca/P ratios. Biomedical Materials. 2009;4(4):045010.

70.          Siddharthan A, Seshadri SK, Kumar TS. Rapid synthesis of calcium deficient hydroxyapatite nanoparticles by microwave irradiation. Trends Biomater Artif Organs. 2005;18(2):110-3.

71.          Xue X, Penn RL, Leite ER, Huang F, Lin Z. Crystal growth by oriented attachment: kinetic models and control factors. CrystEngComm. 2014;16(8):1419.

72.          Madras G, McCoy BJ. Temperature effects during Ostwald ripening. The Journal of Chemical Physics. 2003;119(3):1683-93.