1. Horse behaviour: the behavioural traits and adaptations of domestic and wild horses including ponies;Waring,1983
2. A cytogenetic study of the Caspian pony;Hatami-Monagazah;Journal of Reproduction and Fertility,1979
3. The chromosomes of a rare equine: Equus hemionus kulan;Ryder;Zoonooz,1977
4. The nature of horses — exploring equine evolution, intelligence and behavior;Budiansky,1997
5. Bistable properties of the hock joint of horses;Alexander;J Zool,1989