1. Twenty years of progress in immunization against virus diseases of birds;Beaudette;J. Am. Vet. Med. Assoc.,1949
2. Oral immunization against pox. III. Relationship between vaccine dose and immunization efficacy in vaccinating against HP1 strain in drinking water;Danner;Zbl. Vet. Med. B,1972
3. Oral immunization against pox. 5. Value of protection conferred against fowl pox by drinking water administration of vaccine;Danner;Zbl. Vet. Med. B,1975
4. Vaccination failure in fowl pox;Garg;Indian J. Vet. Med.,1984
5. Immunization against pox in domestic fowl;Graham;Univ. Illinois Agr. Exp. Stat. Bull.,1940