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Journal Article
Finkelstein, Peter L., Alan W. Davison, Howard S. Neufeld, Tilden P. Meyers, and Arthur H. Chappelka. "Sub-Canopy Deposition of Ozone in a Stand of Cutleaf Coneflower." Environmental Pollution 131, no. 2 (2004): 295-303.
Neufeld, Howard S., E. H. Lee, James R. Renfro, and David W. Hacker. "Seedling Insensitivity to Ozone for Three Conifer Species Native to Great Smoky Mountains National Park." Environmental Pollution 108, no. 2 (2000): 141-151.
Chappelka, Arthur H., Howard S. Neufeld, Alan W. Davison, Greg L. Somers, and James R. Renfro. "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.
Davison, Alan W., Howard S. Neufeld, Arthur H. Chappelka, K. Wolff, and Peter L. Finkelstein. "Interpreting Spatial Variation in Ozone Symptoms Shown by Cutleaf Cone Flower, Rudbeckia laciniata L." Environmental Pollution 125, no. 1 (2003): 61-70.
Neufeld, Howard S., Seth J. Peoples, Alan W. Davidson, Arthur H. Chappelka, Greg L. Somers, Jill E. Thomley, and Fitzgerald L. Booker. "Ambient Ozone Effects on Gas Exchange and Total Non-Structural Carbohydrate Levels in Cutleaf Coneflower (Rudbeckia laciniata L.) Growing in Great Smoky Mountains National Park." Environmental Pollution 160, no. January (2012): 74-81.
Conference Proceedings
Hacker, David W., James R. Renfro, and Howard S. Neufeld. 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.