1. Behymer, D. E., Ruppanner, R., Brooks, D., Williams, J. C. &Franti, C. E. (1985).American Journal of Veterinary Research,46, 2413–2417.
2. Figueiredo, E. A. P., Shelton, M. &Pant, K. P. (1982). Proceedings of the 3rd International Conference on Goat Production and Diseases, Tucson,3, pp 488–490.
3. Gogolewski, R. P., Adams, D. S., McGuire, T. C., Banks, K. L. &Cheevers, W. P. (1985).Journal of General Virology,66, 1233–1240.
4. Horner, G. W., Hunter, R. &Day, A. M. (1982).New Zealand Veterinary Journal,30, 150–152.
5. Unanian, M. M., Feliciano Silva, A. E. D. &Pant, K. P. (1985).Tropical Animal Health and Production 17, 57–62.