JOURNAL OF VIROLOGY, vol. 76, no. 5, page. 2529 - 2542, 2002-03
JOURNAL OF MOLECULAR BIOLOGY, vol. 304, no. 2, page. 119 - 133, 2000-11-24
BIOCHEMICAL JOURNAL, vol. 331, no. 1, page. 169 - 175, 1998-04-01
VIROLOGY, vol. 196, no. 2, page. 739 - 747, 1993-10
NATURE, vol. 356, no. 6366, page. 255 - 257, 1992-03-19