S. K. Mor, G. Narang, N. Jindal, N. Mahajan, P. Sharma, and N. Rakha, “Epidemiological Studies on Infectious Bursal Disease in Broiler Chickens in Haryana, India”, Int. J. Poult. Sci., vol. 9, no. 4, pp. 395–400, Mar. 2010, doi: 10.3923/ijps.2010.395.400.