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An Assessment of Campsite Conditions in Great Smoky Mountains National Park In Research/Resources Management Report. U. S. Department of the Interior, National Park Service , 1997.
Assessing Trail Conditions in Protected Areas: Application of a Problem-Assessment Method in Great Smoky Mountains National Park, USA." Environmental Conservation 26, no. 4 (1999): 270-279.
"Characterizing Backcountry Camping Impacts in Great Smoky Mountains National Park, USA." Journal of Environmental Management 57, no. 3 (1999): 193-203.
"The Influence of Sampling Interval on the Accuracy of Trail Impact Assessment." Landscape and Urban Planning 43, no. 4 (1999): 167-179.
"Developing a Natural Resource Inventory and Monitoring Program for Visitor Impacts on Recreation Sites: A Procedural Manual In Natural Resources Report. Denver, CO: National Park Service, 1991.