v.Braun; Leistner; Muench Chemische Berichte, 1926 , vol. 59, p. 1955 Full Text Show Details Fuson; Broude Journal of the American Chemical Society, 1929 , vol. 51, p. 601 Full Text Show Details Fuson Journal of the American Chemical Society, 1928 , vol. 50, p. 1446 Anm.5