K. Krithiga, S. S. Devi, S. Shankar, P. S. Reshma, M. J. Abraham, and D. Nair, “Concurrent Infection of Infectious Bronchitis (IB) and Sub-Clinical Infectious Bursal Disease (IBD) in an Organised Poultry Farm”, Int. J. Livest. Res., vol. 9, no. 7, pp. 261–266, Jul. 2019.