1. Breeding practices in South America;Bravo;Llama Life, No 7, Autumn,1988
2. Factors that determine fertility in alpacas;Bravo;Proceedings International convention on South American Camelids,1985
3. Follicular activity of the ovary in alpacas;Bravo;In Proceedings of the International Convention on South American Camelids,1985
4. Ovulation and corpus luteum function in the llama (Lama glama);Engeland;J Endocrinol,1969
5. Estrous and mating behavior in the llama (Lama glama);Engeland;Anim Behav,1971