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Visitor Use Patterns at Great Smoky Mountains National Park In Research/Resources Management Report. Gatlinburg, TN: Uplands Field Research Laboratory, 1988.
An Evaluation of the Backcountry Camping Permit System for 1983 and 1986 at Great Smoky Mountains National Park. Gatlinburg, TN: Uplands Field Research Laboratory, Great Smoky Mountains National Park, 1989.
Ozone Response of Selected Plant Species from the Great Smoky Mountains National Park In First Annual Southern Appalachian Man and the Biosphere Conference. Gatlinburg, TN: Tennessee Valley Authority, 1990.
Effects of the Ambient Ozone Concentrations on Mature Eastern Hardwood Trees Growing in Great Smoky Mountains In 85th Annual Meeting and Exhibition, Air and Waste Management Association. Kansas City, Missouri, 1992.
"Great Smoky Mountains Plants Studies for Ozone Sensitivity." Park Science: A Resource Management Bulletin 12, no. 1 (1992): 6-7.
Ozone Biomonitoring Trend Plots and Surveys in Great Smoky Mountains National Park In Third Annual Southern Appalachian Man and the Biosphere Conference. Gatlinburg, TN: Tennessee Valley Authority, 1992.
Sensitivity of Native Plant Species to Elevated Levels of Ozone In Third Annual Southern Appalachian Man and the Biosphere Conference. Gatlinburg, TN: Tennessee Valley Authority, 1992.
Sensitivity of Sycamore Seedlings (Platanus occidentalis) to Ozone in Great Smoky Mountains National Park Data from 1989. U. S. Department of the Interior, National Park Service, 1993.
"Sensitivity of Seedlings of Black Cherry (Prunus serotina Ehrh.) to Ozone in Great Smoky Mountains National Park. I. Exposure-Response Curves for Biomass." New Phytologist 130, no. 3 (1995): 447-459.
"Relationships between Cellular Injury, Visible Injury of Leaves, and Ozone Exposure Levels for Several Dicotyledonous Plant Species at Great Smoky Mountains National Park." Environmental and Experimental Botany 36, no. 2 (1996): 229-237.
"Evaluation of Ozone Injury on Foliage of Black Cherry (Prunus serotina) and Tall Milkweed (Asclepias exaltata) in Great Smoky Mountains National Park." Environmental Pollution 95, no. 1 (1997): 13-18.
"Empirical Evidence of Growth Decline Related to Visible Ozone Injury." Forest Ecology and Management 104, no. 1-3 (1998): 129.
"Mature Black Cherry Used as a Bioindicator of Ozone Injury." Water, Air, and Soil Pollution 116, no. 1-2 (1999): 261-266.
"Visible Ozone Injury on Forest Trees in Great Smoky Mountains National Park, USA." Water Air and Soil Pollution 116, no. 1-2 (1999): 255-260.
"Seedling Insensitivity to Ozone for Three Conifer Species Native to Great Smoky Mountains National Park." Environmental Pollution 108, no. 2 (2000): 141-151.
"Ozone Injury on Cutleaf Coneflower (Rudbeckia laciniata) and Crown-Beard (Verbesina occidentalis) in Great Smoky Mountains National Park." Environmental Pollution 125, no. 1 (2003): 53-59.
"Preliminary Findings From the Great Smoky Mountains National Park Air Quality and Hiker Health Study." Epidemiology 15, no. 4 (2004): S216.
"Ozone and PM2.5 Exposure and Acute Pulmonary Health Effects: A Study of Hikers in the Great Smoky Mountains National Park." Environmental Health Perspectives 114, no. 7 (2006): 1044-1052.
"Temporal Patterns of Foliar Ozone Smptoms on Tall Milkweed (Asclepias exaltata L.) in Great Smoky Mountains National Park." Environmental Pollution 149, no. 3 (2007): 358-365.
