1. Electrical properties of alumina ceramics;Insley,1990
2. Handbook of Properties of Technical and Engineering Ceramics, Part I, An Introduction for Engineers and Designers;Morrell,1985
3. Relation of electrical conductivity to chemical composition of glasses;Badger;J. Am. Ceram. Soc.,1940
4. Electrical properties of α-Al2O3;Kroger,1984
5. The effect of iron addition on the electrical properties of alumina ceramics;Kemp;Proc. Br. Ceram. Soc.,1970