1. Effect of vitamin A acid (NSC-122758) on transplantable and chemically induced tumors;Bollag;Cancer Chemother. Rep.,1971
2. Prophylaxis of chemically induced benign and malignant epithelial tumors by vitamin A acid (retinoic acid);Bollag;Europ. J. Cancer,1972
3. Therapeutic effects of an aromatic retinoic acid analog on chemically induced skin papillomas and carcinomas of mice;Bollag;Europ. J. Cancer,1974
4. Therapy of epithelial tumors with an aromatic retinoic acid analog;Bollag;Chemotherapy,1975
5. An inhibitory effect of vitamin A on the induction of tumors of forestomach and cervix in the Syrian hamster by carcinogenic polycyclic hydrocarbons;Chu;Cancer Res.,1965