1. Desrosiers, R. Nature 345, 288–289 (1990).
2. Power, M. D. et al. Science 231, 1567–1572 (1986).
3. Myers, G. et al. Human Retroviruses and AIDS (Los Alamos Lab., Los Alamos, USA, 1989).
4. Myers, G., Berzofsky, J. A., Rabson, A. B., Smith, T. F. & Wong-Staal, F. Human Retroviruses and AIDS (Los Alamos Lab., Los Alamos, USA, 1990).
5. Barton, G. J. & Sternburg, M. J. E. J. molec. Biol. 198, 327–337 (1987).