Ostrogovich; Silbermann Bulet., vol. 16, p. 125 Chem. Zentralbl., 1908 , vol. 79, # I p. 266 Full Text Show Details Ostrogovich; Silbermann Bulet., vol. 15, p. 303 Chem. Zentralbl., 1907 , vol. 78, # I p. 1197