M. K.  Raynolds and Walker, D. A., ?Circumpolar relationships between permafrost characteristics, NDVI, and arctic vegetation types?. pp. 1469-1474, 2008.

H. E.  Epstein, Walker, D. A., Raynolds, M. K., Jia, G. J., and Kelley, A. M., ?Phytomass patterns across a temperature gradient of the North American arctic tundra?, J. Geophys. Res, vol. 113, p. G03S02, 2008.

M. K.  Raynolds, Comiso, J. C., Walker, D. A., and Verbyla, D., ?Relationship between satellite-derived land surface temperatures, arctic vegetation types, and NDVI?, Remote Sensing of Environment, vol. 112, pp. 1884-1894, 2008.