B. Paul, S. Das, S. Badhy, M. Amin, K. Amin, and S. Banik, “Effect of Existing and Imposed Vaccination on Body Weight Against Gumboro in Broiler under Farm Condition”, Int. J. Poult. Sci., vol. 3, no. 10, pp. 655–657, Sep. 2004, doi: 10.3923/ijps.2004.655.657.