BURGOS, Sigfrido; BURGOS, Sergio A. National Vaccination Campaigns Against Highly Pathogenic Avian Influenza Outbreaks in Developing Nations. International Journal of Poultry Science, Pakistan, v. 6, n. 7, p. 531–534, 2007. DOI: 10.3923/ijps.2007.531.534. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/807. Acesso em: 22 sep. 2025.