Bicudo, J.E.P.W., K.E. Longworth, J.H. Jones, C.R. Taylor, and H. Hoppeler.  1996.  Structural
    determinants of maximal O-2 transport in muscles of exercising foxes.  Respiration-Physiology
    103(3):243-251.

Klir, J.J., and J.E. Heath.  1992.  An infrared thermographic study of surface temperatures in relation
    to external thermal stress in three species of foxes:  The red fox, Vulpes vulpes, arctic fox, Alopex
    lagopus, and kit fox, Vulpes macrotis.  Physiological-Zoology 65(5):1011-1021.

Klir, J.J., and J.E. Heath.  1992.  Metabolic rate and evaporative water loss at different ambient
    temperatures in two species of fox:  The red fox, Vulpes vulpes, and the arctic fox, Alopus lagopus.
    Comparative Biochemistry and Physiology a Comparative Physiology 101(4):705-707.

Korhonen, H., M. Harri, and E. Hohtola.  1986.  Response to cold in the blue fox, Alopex lagopus, and
    racoon dog, Nyctereutes procyanoides, as evaluated by metabolism, heart rate and muscular
    shivering:  A re-evaluation. Comparative Biochemistry and Physiology a Comparative Physiology
    82(4):959-964.

Korhonen, H., and M. Harri.  1986.  Heat loss of farmed raccoon dogs, Nyctereutes procyanoides, and
    blue foxes, Alopex lagopus, as evaluated by IR thermography and body cooling. Comparative
    Biochemistry and Physiology a Comparative Physiology 84(2):361-364.

Korhonen, H.  1989.  Regulation of energy economy in raccoon dogs and blue foxes: A process of
    dynamic interactions. Comparative Biochemistry and Physiology a Comparative Physiology
    91(2):263-268.

Prestrud, P., and K. Kilssen.  1992.  Fat deposition and seasonal variation in body composition of arctic
    foxes in Svalbard.  Journal of Wildlife Management 56(2):221-233.

Prestrud, P.  1991.  Adaptations by the Artic fox, Alopex lagopus, to the polar winter.  Arctic
    44(2):132-138.

Pond, C.M., C. Mattacks, and P. Prestrud.  1995.  Variability in the distribution and composition of
    adipose tissue in wild arctic foxes, Alopex lagopus, on Svalbard. Journal-of-Zoology-London 236(4)
    593-610.

Russell, J.E., and R. Tumlison.  1997.  Comparison of microstructure of white winter fur and brown
    summer fur of some Arctic mammals.  Acta-Zoologica-Stockholm 77(4):279-282.

Tallas, P.G, and R.G. White.  1989.  Glucose turnover and defense of blood glucose levels in arctic fox,
    Alopex lagopus.  Comparative Biochemistry and Physiology a Comparative Physiology 91(3):493-498.

Tannerfeldt, M., and A. Anders.  1998.  Fluctuating resources and the evolution of litter size in the
    arctic fox.  Oikos 83(3):545-559.