1. Boccacini A R and Rawlings R D 2002Science 23 18
2. Chang S H and Jung H J 1980Yo op Hoe Chi 17 20
3. Eppler R A 1963J. Am. Ceram. Soc. 45 100
4. Freimann S W and Hench L L 1971Advances in nucleation and crystallization;Proc. of annual session of Am. Ceram. Soc. (NY: Am. Ceram. Soc.)
5. Hillebrand W F and Lundell G E F 1953Applied inorganic analysis (NY: John Wiley & Sons) 2nd ed