1. Thiry, L.: Virology19, 225 (1963).
2. McBride, W.: Virology18, 118 (1962).
3. McClain, M.: Aust. J. exp. Biol. med. Sci.43, 31 (1965).
4. Germanov, A. B., andA. D. Nosachova: Vop. Virus.3, 374 (1966) (in Russian).
5. Germanov, A. B., and M. I.Sokolov: In: ?Materials of Interinstitutes Scientific Conference in Memory of L. A. Tarasevich?, 156 (1967) (in Russian).