1. Graham, S., Dayal, H., Swanson, M., Mittelman, A., and Wilkinson G.,J. Natl. Cancer Inst., 1978, vol. 61, pp. 709–714.
2. Wattenberg, L.W., Loub, W.D., Lam, L.K., and Speier, J.,Fed. Proc., 1975, vol. 35, pp. 1327–1331.
3. Stoewsand, G.S., Babish, J.B., and Wimberly, H.C.,J. Environ. Pathol. Toxicol., 1978, vol. 2, pp. 399–406.
4. Wattenberg, L.W.,Cancer Res., 1983 (Suppl.), vol. 43, pp. 2448–2453.
5. Boyd, J.N., Babish, J.G., and Stoewsand, G.S.,Food Chem. Toxicol., 1982, vol. 2, pp. 47–50.