Igwe, O. Amarachukwu, S. Wilfred Ezema, C. Didacus Eze, and O.A. John Okoye. “Experimental Velogenic Newcastle Disease Can Be Very Severe and Viscerotropic in Chickens But Moderate and Neurotropic in Guinea Fowls”. International Journal of Poultry Science 13, no. 10 (September 15, 2014): 582–590. Accessed September 22, 2025. https://ijpsjournal.org/index.php/ijps/article/view/2099.