Riggs, R. A., J. G. Cook, L. L. Irwin, and J. L. Spicer. 1993. Relating timber management to cover for big game on interior northwest winter range: some thoughts on reducing conflict. Pages 18-36 in R. L. Callas, E. B. Koch, and E. R. Loft, editors. Proceedings of the Western States and Provinces Elk Workshop. Cali
Cook, J. G., R. A. Riggs, A. R. Tiedemann, L. L. Irwin, and L. D. Bryant. 1994. Large herbivore-vegetative feedback relations in the Blue Mountains ecoregion. Pages 155-159 in W. D. Edge and S. L. Olson-Edge, editors. Proceedings of a symposium on sustaining rangeland ecosystems. Oregon State University Extension Service Special Re
Riggs, R. A., J. G. Cook, A. Tiedemann, and L. Bryant. 1995. Twenty-seven years of succession in grand fir forests of the Blue Mountains: influences of wild herbivores. Proceedings of the Western States and Provinces 1995 Joint Deer and Elk Workshop, Sun Valley, Idaho. Idaho Department of Fish and Game.
Vales, D. J., R. A. Riggs, and L. Bryant. 1995. A model to estimate elk vulnerability as influenced by hunter density, roads, cover, and topography. Proceedings of the Western States and Provinces 1995 Joint Deer and Elk Workshop, Sun Valley, Idaho.
Cook, J. G., L. J. Quinlan-Murphy, L. L. Irwin, L. D. Bryant, R. A. Riggs, and J. W. Thomas. 1996. Nutrition-growth relations of elk calves during late summer and fall. Journal of Wildlife Management 60:528-541.
Cook, J. G., B. K. Johnson, R. C. Cook, R. A. Riggs, T. DelCurto, L. D. Bryant, L. L. Irwin 2004. Effects of summer-autumn nutrition and parturition date on reproduction and survival of elk. Wildlife Monographs 155:1-61
Cook, John G.; Riggs, Robert A.; Kie, John G. 1998. Role of large herbivores in management in restoration of disturbance-adapted forest ecosystems. In: Reig, Santiago, ed. Abstracts: Euro-American mammal congress; 1998 July 19-24; Santiago de Compostela, Spain. Santiago de Compostela, Spain: Universid
Riggs, Robert A., John G. Cook, and John G. Kie. 1998. The role of large ruminant herbivores in management and restoration of disturbance-adapted forest ecosystems. Euro-American Mammal Congress, Santiago de Compostela, Spain, 19-24 July 1998.