参考文献

Hahn Patent: DE646706 , 1936 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 24, p. 414 Full Text Show Details Merchant Journal of Scientific and Industrial Research, 1957 , vol. 16 B, p. 373 Full Text Show Details Hahn; Stiehl Chemische Berichte, 1936 , vol. 69, p. 2627,2640