1. Infectious bursal disease in chicken;Ather;Poult. Advisor,1993
2. Outbreak of virulent infectious bursal disease in East Anglia;Chettle;Vet. Rec.,1989
3. IBD vaccination strategies: Tyson Foods, Inc;Fussell,1995
4. Broiler vaccination-additional protection is often needed;Giambrone,1995
5. Seasonal variation in the incidence of subclinical horizontally transmitted infection with chicken anemia virus in Danish broilers and broiler breeders;Jorgensen;Arch. Geflügelkd.,1995