Bower, M. A., Campana, M. G., Whitten, M., Edwards, C. J., Jones, H., Barrett, E., et al. (2010). The cosmopolitan maternal heritage of the Thoroughbred racehorse breed shows a significant contribution from British and Irish native mares. Biology Letters, 7(2), 316-320. doi:10.1098/rsbl.2010.0800.