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.
Schiffman, Joshua (8 October 2015), "Potential Mechanisms for Cancer Resistance in Elephants and Comparative Cellular Response to DNA Damage in Humans", JAMA, 314 (17): 1850–60, doi:10.1001/jama.2015.13134, PMC4858328, PMID26447779
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.
Schiffman, Joshua (8 October 2015), "Potential Mechanisms for Cancer Resistance in Elephants and Comparative Cellular Response to DNA Damage in Humans", JAMA, 314 (17): 1850–60, doi:10.1001/jama.2015.13134, PMC4858328, PMID26447779