1. Alton, G. G. (1961).Research in Veterinary Science,2, 232–239.
2. Alton, G. G. (1973).World Animal Review,5, 16–20.
3. Alton, G. G. & Jones, L. M. (1967). Laboratory Techniques in Brucellosis, FAO Monograph Series No. 55.
4. Ghosh, S. S., Sen, G. P. & Singh, G. (1968).Journal of Comparative Pathology,78, 387–392.
5. Jawetz, E., Melnick, J. & Adelberg, E. A. (1972).Review of Medical Microbiology, 10th edn, Lange Medical Publications, Los Altos, California, p. 207.