1. Al-Saadi, S.A., Clements, G.B. and Subak-Sharpe, J.H. 1983. J. gen. Virol. In press.
2. Barringer, J.R. 1975. Progress in Medical Virology, 20, 1–26.
3. Bastian, F.O., Rabson, A.S., Yee, C.L. and Tralka, T.S. 1972. Science, 178, 306–307.
4. Brown, S.M., Ritchie, D.A. and Subak-Sharpe, J.H. 1973. J. gen. Virol., 18, 329–346.
5. Clements, G.B. and Subak-Sharpe, J.H. “Progress in Brain Research”. (P.O. Behan and V. Ter. Meulen, Eds.). In press. Elsevier, Holland.