1. Emerging Viruses,1993
2. Bluetongue;Howell,1963
3. Bluetongue and epizootic hemorrhagic disease;Gibbs,1988
4. Epidemiology of bluetongue viruses in the American Tropics;Gibbs,1992
5. Epidemiology of arbovirus infections with particular reference to bluetongue;Gibbs,1992