1. Ecosystem Management for Parks and Wilderness;Agee,1988
2. Hierarchy: Perspectives for Ecological Complexity;Starr,1982
3. American Forest and Paper Association, 1993. Sustainable forestry principles and implementation guidelines. American Forest and Paper Association, Washington, DC.
4. The ecosystem as a criterion for public land policy;Caldwell;Nat. Res. J.,1970
5. The report of the Ecological Society of America committee on the scientific basis for ecosystem management;Christensen;Ecol. Appl.,1996