1. Hsu, M. T., Kung, H. J. & Davidson, N. Cold Spring Harb. Symp. quant. Biol. 39, 943–950 (1973).
2. Hewlett, M. M., Pettersson, R. F. & Baltimore, D. J. Virol.. 21, 1085–1093 (1977).
3. Kolakofsky, D. Cell 8, 547–555 (1976).
4. Samso, A., Boyloy, M. & Hannoun, C. C. hebd. Séanc. Acad. Sci., Paris D282, 1653–1655 (1976).
5. Spradling, A., Hui, H. & Penman, D. Cell 4, 131–137 (1975).