1. Retinoids as preventive and therapeutic anticancer agents (part I);Lippman;Cancer Treat. Rep.,1987
2. Retinoids as preventive and therapeutic anticancer agents (part II);Lippman;Cancer Treat. Rep.,1987
3. Enhancement of the antitumor effect of 6-mercaptopurine by vitamin A;Akiyama;Gann,1981
4. Potentiation by vitamin A of the action of anticancer agents against murine tumors;Nakagawa;Jpn. J. Cancer Res.,1985
5. Potentiation of vincristine by vitamin A against drug-resistant mouse leukaemia cells;Nogae;Br. J. Cancer,1987