de Villiers EM, Fauquet C, Broker TR, Bernard HU, zur Hausen H. Classification of papillomaviruses. Virology. 2004-06, 324 (1): 17–27. PMID 15183049. doi:10.1016/j.virol.2004.03.033.
de Villiers EM, Fauquet C, Broker TR, Bernard HU, zur Hausen H. Classification of papillomaviruses. Virology. 2004-06, 324 (1): 17–27. PMID 15183049. doi:10.1016/j.virol.2004.03.033.