1LEWIS N S,JAVAKHISHVILI Z,RUSSELL C A,et al.Avian influenza virus surveillance in wild birds in Georgia:2009—2011[J].PLo S One,2013,8(3):e58534.
2de MARCO M A,FONI E,CAMPITELLI L,et al.Long-term monitoring for avian influenza viruses in wild bird species in Italy[J].Vet Res Commun,2003,27(Suppl1):107-114.