R. F. Miller, Krueger, W. Clement, and Vavra, M.,
“Deer and Elk Use on Foothill Rangelands in Northeastern Oregon”,
Journal of Range Management, vol. 34, no. 3, p. 201, 1981.
J. L. Holechek, Vavra, M., and Skovlin, J.,
“Diet Quality and Performance of Cattle on Forest and Grassland Range”,
Journal of Animal Science, vol. 53, no. 2, pp. 291 - 298, 1981.