参考文献

Schering A.G. Patent: DE668741 , 1936 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 25, p. 299 Full Text Show Details Schering A.G. Patent: DE694990 , 1935 ; DRP/DRBP Org.Chem. Full Text Show Details Schering A. G. Patent: US2116104 , 1936 ;