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Pedersen, N.; Liu, H.; Theilen, G.; Sacks, B. (2013-06-01). "The effects of dog breed development on genetic diversity and the relative influences of performance and conformation breeding". Journal of Animal Breeding and Genetics. 130 (3): 236–248. doi:10.1111/jbg.12017. ISSN1439-0388. PMID23679949.