Intercontinental reassortment and genomic variation of low pathogenic avian influenza viruses isolated from northern pintails (Anas acuta) in Alaska: examining the evidence through space and time - Ramey, Andrew; Pearce, John; Flint, Paul; Ip, S.; Derksen, Dirk; Franson, J. Christian; Petrula, Michael; Scotton, Bradley; Sowl, Kristine; Wege, Michael; Trust, Kimberly (Virology, 2010)