Genetic diversity and mutation of avian paramyxovirus serotype 1 (Newcastle disease virus) in wild birds and evidence for intercontinental spread - Ramey, Andrew; Reeves, Andrew; Ogawa, Haruko; Ip, S.; Imai, Kunitoshi; Bui, V.; Yamaguchi, Emi; Silko, N.; Afonso, C.L. (Archives of Virology, 2013)