4FAUQUET C.Virus taxonomy:classification andnomenclature of viruses:eighth report of the Inter-national Committee on the Taxonomy of Viruses[M].Academic Press,2005.
5LIU L,XIA H,WAHLBERG N,et al.Phylogeny,classification and evolutionary insights into pestivir-uses[J].Virology,2009,385(2):351-357.