Hussein , Hussein A., et al. “Sequence Analysis of Infectious Bronchitis Virus IS 1494 Like Strain Isolated from Broiler Chicken Co-Infected With Newcastle Disease Virus in Egypt During 2012”. International Journal of Poultry Science, vol. 13, no. 9, Aug. 2014, pp. 530–536, https://doi.org/10.3923/ijps.2014.530.536.