M. Kaul, M. Kadam, Y. Malik, A. K. Tiwari, J. Vegad, and B. C. Sarkhel, “Nucleocapsid Gene Sequence Analysis and Characterization of an Indian Isolate of Avian Infectious bronchitis virus”, Int. J. Poult. Sci., vol. 8, no. 5, pp. 493–499, Apr. 2009, doi: 10.3923/ijps.2009.493.499.