JOURNAL OF IMMUNOTHERAPY, vol. 34, no. 3, page. 297 - 306, 2011-04
VACCINE, vol. 23, no. 38, page. 4703 - 4710, 2005-09-07
VACCINE, vol. 21, no. 31, page. 4555 - 4564, 2003-11-07
JOURNAL OF VIROLOGY, vol. 77, no. 21, page. 11596 - 11602, 2003-11