Vocal and spatial responses of coyotes to reintroduced wolves in Yellowstone National Park.
Sheldon, J.W., Crabtree, R.L. and Keiter, M.S.
in: A. P. Curlee, A.-M. Gillesberg, and D. Casey, editors. Greater Yellowstone Predators: Ecology and Conservation in a Changing Landscape: Proceedings of the Third Biennial Conference on the Greater Yellowstone Ecosystem. September 24-27, 1995, Yellowstone National Park. Northern Rockies Conservation Cooperative, Yellowstone National Park, Wyoming, USA, pp. 205-206