参考文献

Gen. Aniline Works Patent: FR812531 ; Full Text Show Details Gen. Aniline Works Patent: US2121330 , 1935 ; Full Text Show Details I.G. Farbenind. Patent: DE668033 , 1935 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 25, p. 116