1. C. Gelain, A. Cassuto, and P. Le Goff,Oxidation of Metals 3 (2), 139 (1971).
2. C. Gelain, A. Cassuto, and P. Le Goff,Oxidation of Metals 3 (2), 115 (1971).
3. A. W. Searcy,J. Am. Ceram. Soc. 40, 431 (1957).
4. V. E. Ivanov, E. P. Nechiporenko, V. M. Krivoruchko, V. I. Zmii, A. S. Mitrofanov, and O. M. Aleksandrov,Izv. Akad. Nauk SSSR, Neorg. Mater. 1 (8), 1360 (1965).
5. L. N. Yefimenko, Ye. P. Nechiporenko, and V. N. Pavlov,Fiz. Metal. i Metalloved. 16 (6), 131 (1963) orPhysics of Metals and Metallography 16 (6), 123 (1963).