References
L. G. BERRY, (ed), “Powder diffraction file” (Joint Committee on powder diffraction standards, Swarth-more 1974).
W. C. HAHN and A. MUAN,Amer. J. Sci. 258 (1960) 66.
I. BARIN, O. KNACKE and O. KUBASCHEWSKI, “Thermochemical Properties of Inorganic Substances” (Springer-Verlag, Berlin, 1973).
V. LONGO and S. ROITTI,La Ceramica 27 (1974 2.
G. V. SAMSONOV, (ed), “The Oxide Handbook”, 2nd edn (IFI/Plenum, New York, 1982).