Morsman Helvetica Chimica Acta, 1935 , vol. 18, p. 1254,1263 Full Text Show Details McElvain Journal of the American Chemical Society, 1935 , vol. 57, p. 1303 Full Text View citing articles Show Details Barnes; McElvain Journal of the American Chemical Society, 1937 , vol. 59, p. 2348,2350