Awad, E. M. ., A. A. . Arafa, M. F. . Mandour, and M. S. . Elshahidy. “Characterization and Genotyping of Avian Infectious Bronchitis Virus in Egypt from 2019 to 2022”. Journal of Advanced Veterinary Research, vol. 13, no. 10, Dec. 2023, pp. 2000-7, https://advetresearch.com/index.php/AVR/article/view/1606.