Cook, J. G., L. L. Irwin, L. D. Bryant, R. A. Riggs, D. A. Hengel, and J. W. Thomas. 1994. Studies of elk biology in northeast Oregon. National Council of the Paper Industry for Air and Stream Improvement, Corvallis, Oregon, USA.
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., L. L. Irwin, L. D. Bryant, and J. W. Thomas. 1994. Fecal nitrogen and dietary quality relationships in juvenile elk. Journal of Wildlife Management 58:46-53.
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
Cook, J. G., T. W. Stutzman, C. W. Bowers, K. A. Brenner, and L. L. Irwin. 1995. Spherical densiometers produce biased estimates of forest canopy cover. Wildlife Society Bulletin 23:711-717.
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