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
FEBS LETTERS, vol. 425, no. 3, page. 401 - 406, 1998-04-03