1. Maskens, A.P. (1979)Cancer Lett. 8, 77–86.
2. Deschner, E.E., Long, F.C., Hakissian, M., and Hermann, S.L. (1983)J. Natl. Cancer Inst. 70, 279–282.
3. Lipkin, M. (1974)Cancer 34, 878–888.
4. Deschner, E.E., and Maskens, A.P. (1982)Cancer 50, 1136–1141.
5. Bird, R.P., and Bruce, W.R. (1984)J. Natl. Cancer Inst. 73, 237–240.