1. F. A. Kröger, The Chemistry of Imperfect Crystals, North-Holland, Amsterdam (1964).
2. W. Jost, Diffusion in Solids, Liquids and Gases, Academic, New York (1960).
3. H. Schmalzried, Festkörperreaktionen, Verlag Chemie, Weinheim (1971).
4. C. Wagner and W. Schottky, Z. Physik. Chem. B 11, 163 (1930).
5. F. A. Kröger and H. J. Vink, in Solid State Physics (F. Seitz and D. Turnbull, eds), Vol. 3, pp. 307ff., Academic, New York, (1956).