• [Wiki] https://en.wikipedia.org/wiki/Arctic_fox.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Vulpes_lagopus.
• [ADW] http://animaldiversity.org/accounts/Vulpes_lagopus/.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [PresNils1995] Prestrud, P. and Nilssen, K. (1995). Growth, size, and sexual dimorphism in arctic foxes. Journal of Mammalogy, 76:522--530.