1. Molecular genetic analysis of orf virus: A poxvirus that has adapted to skin;SB Fleming;Viruses,2015
2. Ovine diseases;DM Haig;Orf. Vet. Res,1998
3. Generalized contagious ecthyma in a sheep rancher: diagnostic considerations;GA Erickson;J Am Vet Med Assoc,1975
4. Human labial orf: a case report;JG Meechan;Br Dent J,1992
5. Orf. A case report with histologic, electron microscopic, and immunoperoxidase studies;RL Sanchez;Arch Pathol Lab Med,1985