HEMMATZADEH, F.; NAYERI, B.; TOFIGHI, E.R. Antigenic Differences in Newcastle Disease Viruses Isolated in Iran. International Journal of Poultry Science, Pakistan, v. 5, n. 5, p. 408–410, 2006. DOI: 10.3923/ijps.2006.408.410. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/549. Acesso em: 22 sep. 2025.