- Biblio
2004
J. G. Cook, Johnson, B. K., Cook, R. C., Riggs, R. A., Delcurto, T., Bryant, L. D., and Irwin, L. L.,
“Nutrition and parturition date effects elk: Potential implications for research and management”,
Transactions of the North American Wildlife and Natural Resources Conference 69. 2004.
2000
R. A. Riggs, Tiedemann, A. R., Cook, J. G., Ballard, T. M., Edgerton, P. J., Vavra, M., Krueger, W. C., Hall, F. C., Bryant, L. D., Irwin, L. L., and Delcurto, T.,
“Modification of mixed-conifer forests by ruminant herbivores in the Blue Mountains ecological province”, PNW-RP-527, 2000.