King, H. J. S. Journal of the Chemical Society, 1930 , p. 2307 - 2319 Full Text View citing articles Show Details Schall, C. Zeitschrift fuer Elektrochemie, 1913 , vol. 19, p. 830 - 833 Full Text Show Details Gmelin Handbook: Cu: MVol.B2, 85, page 810 - 812