Wegner, M., and M. Gesek. “The Influence of Ross 308 Breeder Flock Age on Serum Newcastle Disease Virus and Infectious Bursal Disease Virus Antibody Levels and Their Transfer to Offspring”. Polish Journal of Veterinary Sciences 29, no. 2 (June 15, 2026): 263–269. Accessed August 15, 2026. https://wydawnictwo.pan.pl/index.php/pjvs/article/view/1269.