AL-Zuhariy, Mushtaq T. B. “Improved Vaccine Strategies of Infectious Bronchitis Disease to Reduce Shedding of Virulent Virus from Infected Birds”. Kufa Journal For Veterinary Medical Sciences 8, no. 1 (June 30, 2017): 50–57. Accessed May 18, 2024. https://journal.uokufa.edu.iq/index.php/kjvs/article/view/4310.