1. D.K. Chatterjee, M.G. Mendiratta, and H.A. Lipsitt,J. Mater. Sci., Vol 14, 1979, p 2151–2156
2. H. Endo, M. Ueki, and H. Kubo,J. Mater. Sci., Vol 25, 1990, p 2103–2506
3. H. Endo, M. Ueki, and H. Kubo,J. Mater. Sci., Vol 26, 1991, p 3769–3775
4. K. Ueno, S. Sodeoka, and M. Yano,J. Ceram. Soc. Jpn., Vol 97, 1989, p 507–512
5. E.E. Underwood, A.R. Colcord, and R.C. Waugh,Ceramic Microstructures, R.M. Fulrath and J.A. Pask, Ed., Robert E. Kringer Publishing, 1966, p 25-52