Mel'nikow; Schwezowa-Schilowskaja Zhurnal Obshchei Khimii, 1953 , vol. 23, p. 1352,1356;engl.Ausg.S.1417,1420 Full Text Show Details Am.Cyanamid Co. Patent: DE847897 , 1951 ; Full Text Show Details Am.Cyanamid Co. Patent: US2578652 , 1950 ; DRP/DRBP Org.Chem.