H. Khadzhiev: Isolation, identification and typing of Newcastle disease virus isolates in a chick embryo cell culture. Vet. Med. Nauki. (1984) 21(10): S. 19–27 (nur Abstract), PMID 6531856.
D. J. Alexander und G. Parsons: Avian paramyxovirus type 1 infections of racing pigeons: 2 pathogenicity experiments in pigeons and chickens. Vet. Rec. (1984) 114(19): S. 466–469, PMID 6464308.
