Phylogeographic analysis of avian influenza viruses isolated from Charadriiformes in Belgium confirms intercontinental reassortment in gulls., Van Borm, Steven, Rosseel Toon, Vangeluwe Didier, Vandenbussche Frank, van den Berg Thierry, and Lambrecht Bénédicte , Arch Virol, 2012 Aug, Volume 157, Issue 8, p.1509-22, (2012)