Inglis, J. K. H. Journal of the Chemical Society, 1903 , vol. 83, p. 1010 - 1014 Full Text View citing articles Show Details Treadwell, F. P.; Anneler, E. Z. Anorg. Chem., 1906 , vol. 48, p. 86 - 97 Full Text Show Details Gmelin Handbook: O: MVol.4, 87, page 1174 - 1176