Lang, R. Z. Anorg. Chem., 1922 , vol. 122, p. 332 - 332 Full Text Show Details MacCulloch, N. Chem. News J. Ind. Sci., 1888 , vol. 57, p. 47 - 47 Full Text Show Details Gmelin Handbook: I: MVol.1, 58, page 187 - 189