8Briggs D J. Application of the positive/negative ratio method of analysis to quantitate antibody responses to infectious bursal disease virus using a commercially available ELISA [J]. Avian Dis, 1986, 30(1): 216-218.
9Mette Kusk, Susanne Kabell. Differentiation of five strains of infectious bursal disease virus: Development of a strainspecific multiplex PCR [J]. Veterinary Microbiology, 2005, 109: 159-167.
10World Organisation for Animal Health. Infectious bursal disease [EB/OL]. Manual of Diagnostic Tests and Vaccines for Terrestrial Animals 2008, http://www.oie.int/eng/normes/ mmanual/2008/pdf/2.03.12_IBD.pdf, 2009-5-11.