1. R.C. Garvie, R.H.J. Hannink and R.T. Pascoe. Nature (Lond) 258, 703 (1975).
2. Science and Technology of Zirconia I, Advances In Ceramics, Vol. 3, 1981 Edts: A.H. Heuer and L. Hobbs.
3. Science and Technology of Zirconia II, Advances in Ceramics, Vol. 12, 1984, Eds. N. Claussen, M. Ruhle and A.H. Heuer.
4. J. Drennan and M.V. Swain, to be published.
5. J. Drennan and R.H.J. Hannink, J. Am. Ceram. Soc. in press’86.