Biblio

O. State Univ Station, Range Research Areas in the Western United States, vol. 671. Agricultural Experiment Station, Oregon State University, 1988.

E. K. Heyerdahl, Miller, R. F., and Parsons, R. A., “History of fire and Douglas-fir establishment in a savanna and sagebrush–grassland mosaic, southwestern Montana, USA”, Forest Ecology and Management, vol. 230, no. 1-3, pp. 107 - 118, 2006.

M. J. Rinella, Maxwell, B. D., Fay, P. K., Weaver, T., and Sheley, R., “Control effort exacerbates invasive-species problem.”, Ecol Appl, vol. 19, no. 1, pp. 155-62, 2009.