Jur'ew; Gragerow Zhurnal Obshchei Khimii, 1949 , vol. 19, p. 724,728; engl. Ausg. S. 697 Chem.Abstr., 1949 , p. 3818 Full Text Show Details Peters; Fischer Journal of the American Chemical Society, 1930 , vol. 52, p. 2079,2081 Full Text Show Details Duveen; Kenyon Journal of the Chemical Society, 1936 , p. 621 Full Text Show Details Crombie; Harper Journal of the Chemical Society, 1950 , p. 1707,1712