Kasahara Nippon Kagaku Zasshi, 1955 , vol. 76, p. 535,536 Chem.Abstr., 1957 , p. 17902 Full Text Show Details Fel'dman; Simeonow Zhurnal Obshchei Khimii, 1953 , vol. 23, p. 2043,2045; engl. Ausg. S. 2159, 2160