1. Tooze, J. DNA Tumour Viruses 2nd edn, Pt 2 (Cold Spring Harbor Laboratory, New York, 1980).
2. Ely, B. K. & Smith, A. E. in Advances in Viral Oncology Vol. 3, 3–30 (Raven, New York).
3. Treisman, R., Novak, U., Favaloro, J. & Kamen, R. Nature 292, 595–600 (1981).
4. Smith, A. E., Smith, R., Griffin, B. & Fried, M. Cell 18, 915–924 (1979).
5. Eckhart, W., Hutchinson, M. A. & Hunter, T. Cell 18, 925–933 (1979).