参考文献

Schering Corp. Patent: US2344965 , 1936 ; Full Text Show Details Ruzicka; Kaegi Helvetica Chimica Acta, 1936 , vol. 19, p. 842,847 Full Text Show Details Schering A.G. Patent: DE763488 , 1935 ; DRP/DRBP Org.Chem. Full Text Show Details Ruzicka; Wettstein; Kaegi Helvetica Chimica Acta, 1935 , vol. 18, p. 1478,1482