1. The Chemistry of Imperfect Crystals;Kröger,1974
2. Mass Transport in Non-Metallic Solids;O'Keefe,1971
3. Nonstoichiometry, Diffusion and Electrical Conductivity in Binary Metal Oxides;Kofstad,1972
4. Thermogravimetric studies of the defect structure of rutile (TiO2)