1. Akey, B.L., 2003. Low-pathogenicity H7N2 avian influenza outbreak in Virginia during 2002. Avian Diseases, 47 (special issue), 1099–1103.
2. Alexander, D.J., 1997. Highly pathogenic avian influenza (fowl plague). In: OIE Manual of standards for diagnostic tests and vaccines: list A and B diseases of mammals, birds and bees. 3rd edn. Office International des Epizooties, Paris, 155–160.
3. APHIS, 1998. Avian influenza emergency disease guidelines. Animal Plant Health Inspection Service, USDA, Hyattsville.
4. Capua, I. and Marangon, S., 2003. The use of vaccination as an option for the control of avian influenza. Avian Pathology, 32(4), 335–343.
5. Capua, I. and Mutinelli, F., 2001. A color atlas and text on avian influenza. Papi Editore, Bologna.