Ahmed A Sehry, et al. “Prevalence and Epidemiological Study of Infectious Bronchitis in Broiler Chickens at Nineveh Governorate”. The Indian Veterinary Journal, vol. 100, no. 6, July 2023, pp. 12-16, https://epubs.icar.org.in/index.php/IVJ/article/view/138903.