D'Ans, J.; Hoefer, P. Angewandte Chemie, 1934 , vol. 47, p. 71 - 74 Full Text Show Details Kolthoff, I. M.; Yutzy, H. Industrial and Engineering Chemistry, Analytical Edition, 1937 , vol. 9, p. 75 - 76 Full Text View citing articles Show Details Gmelin Handbook: Cl: SVol.B2, 35, page 391 - 393