Ryder, J. L., P. McNeil, J. Hamm, W. A. Nixon, D. Russell, and S. R. Francis. “An Integrated Assessment of Porcupine Caribou Seasonal Distribution, Movements, and Habitat Preferences for Regional Land Use Planning in Northern Yukon Territory, Canada”. Rangifer, vol. 27, no. 4, Apr. 2007, pp. 259-70, doi:10.7557/2.27.4.353.