1. Amerault, T. E. &Roby, T. O. (1964).American Journal of Veterinary Research,25, 1642–1647.
2. Amerault, T. E. &Roby, T. O. (1967).American Journal of Veterinary Research,28, 1067–1072.
3. Amerault, T. E. &Roby, T. O. (1968).Journal of the American Veterinary Medical Association,153, 1828–1834.
4. Amerault, T. E. &Roby, T. O. (1971).Journal of the American Veterinary Medical Association,159, 1749–1751.
5. Amerault, T. E., Rose, J. E. &Roby, T. O. (1972). Proceedings of the 76th Annual Meeting of the United States Animal Health Association. November, 1972.