Utami, Y. M., S. Widyarini, and M. H. Wibowo. “Comparative Biological Pathotyping of Newcastle Disease Virus Sub-Genotypes VIIg, VIIh, and VIIi in Specific Pathogen Free (SPF) Chickens”. Tropical Animal Science Journal 46, no. 2 (May 24, 2023): 172–179. Accessed January 14, 2026. https://journal.ipb.ac.id/tasj/article/view/44782.