Stevens Journal of the American Chemical Society, 1934 , vol. 56, p. 451 Full Text Show Details Colonge; Mostafavi Bulletin de la Societe Chimique de France, 1939 , vol. <5>6, p. 344 Full Text Show Details Evans; Gillam Journal of the Chemical Society, 1941 , p. 815,816 Full Text Show Details Braude et al. Journal of the Chemical Society, 1949 , p. 1890,1892