S. Idachaba, C. Nwosuh, E. Aba-Adulugba, and F. Fasina, “Precipitation of Clinical Infections in Chickens by Infectious Bursal Disease Virus Preserved under Different Storage Temperatures”, Int. J. Poult. Sci., vol. 8, no. 11, pp. 1058–1061, Oct. 2009, doi: 10.3923/ijps.2009.1058.1061.