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Nagy, John D.; Victor, Erin M.; Cropper, Jenese H. (2007). “Why don't all whales have cancer? A novel hypothesis resolving Peto's paradox”. 《Integrative and Comparative Biology》 47 (2): 317–328. doi:10.1093/icb/icm062. PMID21672841.
Fleming, J.M.; Creevy, K.E. (2011년 2월 25일). “Mortality in North American Dogs from 1984 to 2004: An Investigation into Age-, Size-, and Breed-Related Causes of Death”. 《Journal of Veterinary Internal Medicine》 25 (2): 187–198. doi:10.1111/j.1939-1676.2011.0695.x. PMID21352376.