Hemmatzadeh, F., B. Nayeri, and E.R. Tofighi. “Antigenic Differences in Newcastle Disease Viruses Isolated in Iran”. International Journal of Poultry Science 5, no. 5 (April 15, 2006): 408–410. Accessed June 13, 2026. https://ijpsjournal.org/ijps/article/view/549.