[1] Rengstorff, G. W. P.: Trans, AIME, 1956, 206, 171．
[2] Bartlett, E. S., Williams, D. N., Jaffee, R. I.: Trans. AIME, 1958, 212, 458．
[3] Kessler, H. D., Hansen, M.: Trans. Am. Soc. Metals, 1950, 42, 1008．
[4] #12
[5] Spedding, F. H., Daane, A. H.: The Rare Earth, (Wiley, 1961) , p. 258．
[6] 李薰、郑逸苹、银耀德:金属学报,1965,8,221．
[7] Borchardt, H. J.: J. Inorg. Chem., 1963, 2, 170． |
