1. Auruvillius B 1949Arki Kemi 1 463
2. Chen Da Ren 1986IEEE 86 165
3. Chen Da Ren and Guo Yan Yi 1982Electronic elements and materials 1 25
4. Gurevich V M 1971Electrical conductivity of ferroelectrics (Israel Program for Scientific Translations Ltd.)
5. Subba Rao E C 1962J. Phys. Chem. Solids 23 665