“…(15) Rechnitz, G. A., Ibid., 37, 29A (1965). Banks (10) for analyzing alkali-metal tungsten bronzes is thorough and excels earlier methods (2, [6][7][8][9][11][12][13][14][15], but is highly sophisticated. The method described in this paper does not require the complicated equipment and procedures used by them to determine the alkali metal-to-tungsten ratio and assumes only that the oxygen-to-tungsten ratio is three to one, and that the residue consists only of the alkali-metal chloride.…”