1. Berwald, Y., Sachs, L. (1965): In vitro transformation of normal cells to tumor cells by carcinogenic hydrocarbons. J. Natl. Cancer Inst. 35:641–661.
2. Casto, B.C., DiPaolo, J.A. (1973): Virus, chemicals and cancer. Progr. Med. Virol. 16: 1–47.
3. Casto, B.C., Janosko, N., DiPaolo, J.A. (1977): Development of a focus assay model for transformation of hamster cells in vitro by chemical carcinogens. Cancer Res. 37: 3508–3515.
4. Casto, B.C., Pieczynski, W.J., DiPaolo, J.A. (1973): Enhancement of adenovirus transformation by treatment of hamster cells with diverse chemical carcinogens. Cancer Res. 34: 12–78.
5. DiPaolo, J.A. (1980): Quantitative in vitro transformation of Syrian Golden hamster embryo cells with the use of frozen stored cells. J. Natl. Cancer Inst. 64: 1485–1489.