1. Etiology of bladder cancer; Metabolic aspects in analytic and experimental epidemiology of cancer;Yoshida,1973
2. Formation of blastomogenic diphenylamino derivatives as a result of the metabolism of direct azo dyes;Genin;Vopr. Onkol.,1977
3. Thirteen week subchronic toxicity studies of Direct Blue 6, Direct Black 38, and Direct Brown 95 dyes;U.S. Dept.-of Health, Education and Welfare, National Cancer Institute;Publication No. (NIH) 78-1358,1978
4. Multiple tumors in rats after oral administration of the benzidine type dye Direct Deep Black EX (in Japanese);Okajima;Igaku No. Ayumi,1975
5. Metabolic reduction of benzidine azo dyes in the rhesus monkey;Rinde;J. Natl. Cancer Inst.,1975