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- Curtis, Paul D. and Sullivan, Kristi L. (2001) Tree Squirrels, Wildlife Damage Management Fact Sheet Series, Cornell Cooperative Extension, Ithaca, N.Y.
- Wilson & Reeder (eds.) (2005) Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), Johns Hopkins University Press, 2,142 pp. (http://www.press.jhu.edu).
- Gurnell et al. (2006) Squirrel poxvirus: Landscape scale strategies for managing disease threat. Biological Conservation. 131, 287-295.
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