González-Hein, G. A., González, C. M. and Huaracán, B. R. (2017) “Fatal dual infection of avian polyomavirus and psittacine beak and feather disease virus in Chile”, Austral Journal of Veterinary Sciences, 49(1), pp. 59–61. Available at: http://revistas.uach.cl/index.php/australjvs/article/view/729 (Accessed: 16 April 2026).