Woronkow; Sgonnik Zhurnal Obshchei Khimii, 1957 , vol. 27, p. 1476,1479, 1480; engl.Ausg.S. 1550, 1553 Full Text Show Details Schwarz; Schoeller Chemische Berichte, 1958 , vol. 91, p. 2103,2107, 2108