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Rhododendron Decline in the Great Smoky Mountains and Surrounding Areas." Southeastern Naturalist 13, no. 1 (2014): 1-25.
"All Taxa Biodiversity Inventory Survey of Select Soil and Plant Ecological Parameters Associated with Rhododendron Decline in the Great Smoky Mountains and Surrounding Area." Southeastern Naturalist 12, no. 4 (2013): 703-722.
"Rhododendron Decline in the Great Smoky Mountains and Surrounding Areas." Southeastern Naturalist 12, no. 4 (2013): 703-722.
"Exotic Plant Species Invasion and Control in Great Smoky Mountains National Park, USA." In Invasive Plant and Forest Ecosystems, 295-322. New York: CRC Press, 2009.
"Managing Hemlock Woolly Adelgid and Balsam Woolly Adelgid at Great Smoky Mountains National Park." In Third Symposium on Hemlock Woolly Adelgid in the Eastern United States, 232. Asheville, NC: U.S. Forest Service, 2005.
"Associations Between Causal Agents of the Beech Bark Disease Complex [Cryptococcus fagisuga (Homoptera: Cryptococcidae) and Nectria spp.] in the Great Smoky Mountains National Park." Environmental Entomology 33, no. 5 (2004): 1274-1281.
"A Model to Predict the Occurence of Surviving Butternut Trees in the Southern Appalachian Region." In Prediciting Species Occurrences Issues of Accuracy and Scale, edited by Michael J. Scott, Patricia J. Heglund, Michael L. Morrison, Jonathan B. Haufler, Martin G. Raphael, William A. Wall and Fred B. Samson, 491-497. Washington, D.C.: Island Press, 2002.
"Hemlock Resources at Risk in the Great Smoky Mountains National Park In Proceedings of the Symposium on Sustainable Management of Hemlock Ecosystems in Eastern North America. Newtown Square, PA: U.S. Department of Agriculture, 1999.
Fraser Fir and Balsam Wooly Aphid: Summary of Information. The Southern Appalachian Research -- Resource Management Cooperative, 1980.
Fraser Fir in the Great Smoky Mountains National Park: Its Demise by the Balsam Woolly Aphid (Adelges Piceae Ratz.). Knoxville, TN: Department of Forestry, University of Tennessee, 1978.
Balsam Woolly Aphid Infestation of Fraser Fir in the Great Smoky Mountains. Knoxville, TN: University of Tennessee, 1977.
Status of the Balsam Woolly Aphid in the Great Smoky Mountains National Park --- 1976 In Management Report. Gatlinburg, TN: Uplands Field Research Laboratory, 1976.