1. How many grizzlies in Yellowstone?;LL Eberhardt;Journal of Wildlife Management,1996
2. Haroldson MA, van Manen FT, Bjornlie DD (2013) Estimating number of females with cubs-of-the-year. In: van Manen FT, Haroldson MA, West K, editors. Yellowstone grizzly bear investigations: annual report of the Interagency Grizzly Bear Study Team, 2012. Bozeman, MT: U.S. Geological Survey. pp. 11–18.
3. Temporal, spatial, and environmental influences on the demographics of grizzly bears in the Greater Yellowstone Ecosystem;CC Schwartz;Wildlife Monographs,2006
4. Interagency Grizzly Bear Study Team (2012) Updating and evaluating approaches to estimate population size and sustainable mortality limits for grizzly bears in the Greater Yellowstone Ecosystem. Bozeman, MT: U.S. Geological Survey, Northern Rocky Mountain Science Center. 66 p.
5. Boyce MS, Blanchard BM, Knight RR (2001) Population viability for grizzly bears: a critical review. Yellowstone National Park, WY: International Association for Bear Research and Management Monograph Series Number 4. 45 p.