1. Lippman SM, Kessler IF, Meyskens FL (1987) Retinoids as preventive and therapeutic anticancer agents (part I). Cancer Treat Rep 71: 391
2. Lippman SM, Kessler IF, Meyskens FL (1987) Retinoids as preventive and therapeutic anticancer agents (part II). Cancer Treat Rep 71: 493
3. Akiyama S, Masuda A, Tabuki T, Kuwano M, Komiyama S (1981) Enhancement of the antitumor effect of 6-mercaptopurine by vitamin A. Jpn J Cancer Res 72: 742
4. Nakagawa M, Yamaguchi T, Veda H, Shiraishi N, Komiyama S, Akiyama S, Ogata J, Kuwano M (1985) Potentiation by vitamin A of the action of anticancer agents against murine tumors. Jpn J Cancer Res 76: 887
5. Nogae I, Kikuchi J, Yamaguchi T, Shiraishi N, Kuwano M (1987) Potentiation of vincristine by vitamin A against drug-resistant mouse leukaemia cells. Br J Cancer 56: 267