- Biblio
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.