Hou, Y., Wang, Y., Lu, X., Zhang, X., Zhao, Q., Todhunter, R. J., & Zhang, Z. (2013). Monitoring Hip and Elbow Dysplasia Achieved Modest Genetic Improvement of 74 Dog Breeds over 40 Years in USA. Public Library of Science.

Hou, Yali, Yachun Wang, Xuemei Lu, Xu Zhang, Qian Zhao, Rory J. Todhunter, και Zhiwu Zhang. Monitoring Hip and Elbow Dysplasia Achieved Modest Genetic Improvement of 74 Dog Breeds Over 40 Years in USA. Public Library of Science, 2013.

Hou, Yali, et al. Monitoring Hip and Elbow Dysplasia Achieved Modest Genetic Improvement of 74 Dog Breeds Over 40 Years in USA. Public Library of Science, 2013.