1. R. F. Domagala, J. J. Rausch, and D. W. Levinson, Trans. Amer. Soc. Met.,53, 137 (1961).
2. J. V. Florio, R. E. Rundle, and A. I. Snow, Acta Cryst.,5, 4, 449 (1952).
3. M. Yu. Teslyuk, P. I. Kripyakevich, and D. P. Frankevich, Kristallogr.,9, 4, 558 (1964).
4. V. F. Novy, R. C. Vickery, and E. V. Kleber, Trans. Met. Soc., AIME,221, 3, 580 (1961).
5. F. E. Wang, J. V. Gilfrich, D. W. Ernst, and W. M. Hubbard, Acta Cryst.,17, 7, 931 (1964).