1. R.C. Buchanan, Ceramic Materials for Electronics – Processing Properties and Application, second edition, Marcel Dekker, New York, 1991, p. 1.
2. J.A. McPhee, S.J. Macgregor, J.R. Tidmarsh, Annual report: Conference On Electrical Insulation and Dielectric Phenomena, IEEE Dielectr. Insulat. Soc. II (2000).
3. Stable and Metastable Equilibria in the System SiO2-Al2O3