VIRUS GENES, vol. 19, no. 1, page. 33 - 43, 1999-07
VACCINE, vol. 17, no. 9-10, page. 1136 - 1144, 1999-03-05
JOURNAL OF VIROLOGY, vol. 72, no. 4, page. 3060 - 3065, 1998-04
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, vol. 233, no. 1, page. 288 - 292, 1997-04-07
JOURNAL OF VIROLOGY, vol. 66, no. 5, page. 3236 - 3240, 1992-05