参考文献

Gen. Aniline Works Patent: US1887396 , 1930 ; Full Text Show Details Fusco et al. Gazzetta Chimica Italiana, 1948 , vol. 78, p. 951,961 Full Text Show Details I. G. Farbenind. Patent: DE567753 , 1928 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 18, p. 550