1. G. R. Wallwork, Ph.D. Thesis, University of New South Wales (1959).
2. P. K. Kofstad,High Temperature Oxidation of Metals (John Wiley & Sons, New York, 1966).
3. R. F. Decker, Symposium on Steel Strengthening Mechanisms, Zurich, Switzerland (May 1969).
4. S. Jansen and E. A. Gulbransen, 4th International Congress on Metallic Corrosion, Amsterdam (September 1969).
5. W. C. Hagel,Trans. ASM 56, 583 (1963).