@article {3119,
	title = {Temporal Patterns of Foliar Ozone Smptoms on Tall Milkweed (Asclepias exaltata L.) in Great Smoky Mountains National Park},
	journal = {Environmental Pollution},
	volume = {149},
	year = {2007},
	month = {October},
	pages = {358-365},
	keywords = {Air quality, Ecosystem, Flora, Topography, Trails},
	author = {Chappelka, Arthur H and Somers, Greg L and Renfro, James R}
}
@article {3277,
	title = {Ozone and PM2.5 Exposure and Acute Pulmonary Health Effects: A Study of Hikers in the Great Smoky Mountains National Park},
	journal = {Environmental Health Perspectives},
	volume = {114},
	year = {2006},
	month = {July},
	pages = {1044-1052},
	keywords = {Charlies Bunion, Health, Hiking, Tourism},
	author = {Girardot, Steven P and Ryan, P. Barry and Smith, Susan M and Davis, Wayne T and Hamilton, Charles B and Obenour, Richard A and Renfro, James R and Tromatore, Kimberly A and Reed, Gregory D}
}
@article {3278,
	title = {Preliminary Findings From the Great Smoky Mountains National Park Air Quality and Hiker Health Study},
	journal = {Epidemiology},
	volume = {15},
	year = {2004},
	month = {July},
	pages = {S216-S216},
	keywords = {Air quality, Charlies Bunion, Hiking, Pollution, Tourism},
	author = {Girardot, Steven P and Tromatore, Kimberly A and Lam, Yun F and Malone, Ryan W and Atterholt, Cynthia A and Davis, Wayne T and Hamilton, Charles B and Renfro, James R and Ryan, P. Barry and Smith, Susan M and Reed, Gregory D}
}
@article {3118,
	title = {Ozone Injury on Cutleaf Coneflower (Rudbeckia laciniata) and Crown-Beard (Verbesina occidentalis) in Great Smoky Mountains National Park},
	journal = {Environmental Pollution},
	volume = {125},
	year = {2003},
	pages = {53-59},
	keywords = {Air quality, Cherokee Orchard, Clingmans Dome, Flora, Pollution},
	author = {Chappelka, Arthur H and Neufeld, Howard S and Davison, Alan W and Somers, Greg L and Renfro, James R}
}
@article {3640,
	title = {Seedling Insensitivity to Ozone for Three Conifer Species Native to Great Smoky Mountains National Park},
	journal = {Environmental Pollution},
	volume = {108},
	year = {2000},
	pages = {141-151},
	keywords = {Air quality, Flora, Forests, Hemlocks, Ozone, Pollution, Trees -- Growth},
	author = {Neufeld, Howard S and Lee, E. H and Renfro, James R and Hacker, W. David}
}
@article {5232,
	title = {Mature Black Cherry Used as a Bioindicator of Ozone Injury},
	journal = {Water, Air, and Soil Pollution},
	volume = {116},
	year = {1999},
	month = {November},
	pages = {261-266},
	publisher = {Springer},
	keywords = {Black cherry, Ozone, Pollution},
	author = {Chappelka, Arthur H and Skelly, John M and Somers, Greg L and Renfro, James R and Hildebrand, Elisabeth}
}
@article {3117,
	title = {Visible Ozone Injury on Forest Trees in Great Smoky Mountains National Park, USA},
	journal = {Water Air and Soil Pollution},
	volume = {116},
	year = {1999},
	month = {November},
	pages = {255-260},
	keywords = {Cove Mountain, Ecosystem, Ozone},
	url = {http://www.springerlink.com/content/j014vr70431r11t7/},
	author = {Chappelka, Arthur H and Somers, Greg L and Renfro, James R}
}
@article {5238,
	title = {Empirical Evidence of Growth Decline Related to Visible Ozone Injury},
	journal = {Forest Ecology and Management},
	volume = {104},
	year = {1998},
	month = {May 12},
	pages = {129},
	publisher = {Elsevier},
	keywords = {Black cherry, Ozone, Poplars, Trees -- Growth decline},
	author = {Chappelka, Arthur H and Somers, Greg L and Renfro, James R and Rosseau, P.}
}
@article {3116,
	title = {Evaluation of Ozone Injury on Foliage of Black Cherry (Prunus serotina) and Tall Milkweed (Asclepias exaltata) in Great Smoky Mountains National Park},
	journal = {Environmental Pollution},
	volume = {95},
	year = {1997},
	pages = {13-18},
	keywords = {Air quality, Flora, Forests, Pollution},
	author = {Chappelka, Arthur H and Renfro, James R and Somers, Greg L and Nash, Bruce}
}
@article {11903,
	title = {Relationships between Cellular Injury, Visible Injury of Leaves, and Ozone Exposure Levels for Several Dicotyledonous Plant Species at Great Smoky Mountains National Park},
	journal = {Environmental and Experimental Botany},
	volume = {36},
	year = {1996},
	pages = {229-237},
	publisher = {Elsevier},
	keywords = {Air pollution, Blackberries, Fauna, Flowering plants, Ozone, Sassafras},
	author = {Evans, Lance S and Adamski, John H and Renfro, James R}
}
@article {4688,
	title = {Sensitivity of Seedlings of Black Cherry (Prunus serotina Ehrh.) to Ozone in Great Smoky Mountains National Park. I. Exposure-Response Curves for Biomass},
	journal = {New Phytologist},
	volume = {130},
	year = {1995},
	month = {July},
	pages = {447-459},
	keywords = {Ozone, Trees -- Growth},
	author = {Neufeld, Howard S and Lee, E. Henry and Renfro, James R and Hacker, W. David and Yu, Ben-Hui}
}
@article {6106,
	title = {Sensitivity of Sycamore Seedlings (Platanus occidentalis) to Ozone in Great Smoky Mountains National Park Data from 1989},
	year = {1993},
	month = {December},
	institution = {U. S. Department of the Interior, National Park Service},
	keywords = {Air pollution, Ozone, Trees},
	isbn = {Technical Report NPS/NRTR-93/131},
	author = {Neufeld, Howard S and Renfro, James R}
}
@proceedings {6081,
	title = {Effects of the Ambient Ozone Concentrations on Mature Eastern Hardwood Trees Growing in Great Smoky Mountains},
	journal = {85th Annual Meeting and Exhibition, Air and Waste Management Association},
	year = {1992},
	note = {Chappelka is from Auburn University, Hildebrand and Skelly are from Penn State, Mangis is from National Park Service, Lakewood, Colorado, Renfro is from National Park Service, Gatlinburg},
	month = {June 21-26},
	address = {Kansas City, Missouri},
	keywords = {Air quality, Hardwood forests, Ozone},
	author = {Chappelka, Arthur H and Hildebrand, Elisabeth and Skelly, John M and Mangis, Deborah and Renfro, James R}
}
@article {6096,
	title = {Great Smoky Mountains Plants Studies for Ozone Sensitivity},
	journal = {Park Science:  A Resource Management Bulletin},
	volume = {12},
	year = {1992},
	month = {Winter},
	pages = {6-7},
	keywords = {Air pollution, Flora, Ozone},
	author = {Hacker, W. David and Renfro, James R}
}
@proceedings {5350,
	title = {Ozone Biomonitoring Trend Plots and Surveys in Great Smoky Mountains National Park},
	journal = {Third Annual Southern Appalachian Man and the Biosphere Conference},
	year = {1992},
	month = {November},
	pages = {45},
	publisher = {Tennessee Valley Authority},
	address = {Gatlinburg, TN},
	keywords = {Air pollution, Ozone, Trees -- Growth decline, Vegetation monitoring},
	author = {Chappelka, Arthur H and Renfro, James R}
}
@proceedings {5345,
	title = {Sensitivity of Native Plant Species to Elevated Levels of Ozone},
	journal = {Third Annual Southern Appalachian Man and the Biosphere Conference},
	year = {1992},
	month = {November},
	pages = {24},
	publisher = {Tennessee Valley Authority},
	address = {Gatlinburg, TN},
	keywords = {Flora, Ozone, Pollution},
	author = {Hacker, W. David and Renfro, James R and Neufeld, Howard S}
}
@proceedings {5361,
	title = {Ozone Response of Selected Plant Species from the Great Smoky Mountains National Park},
	journal = {First Annual Southern Appalachian Man and the Biosphere Conference},
	year = {1990},
	month = {November},
	pages = {40},
	publisher = {Tennessee Valley Authority},
	address = {Gatlinburg, TN},
	keywords = {Air pollution, Flora, Ozone},
	author = {Hacker, W. David and Renfro, James R}
}
@article {5030,
	title = {An Evaluation of the Backcountry Camping Permit System for 1983 and 1986 at Great Smoky Mountains National Park},
	year = {1989},
	month = {April},
	institution = {Uplands Field Research Laboratory, Great Smoky Mountains National Park},
	address = {Gatlinburg, TN},
	keywords = {Backpacking, Camping, Tourism},
	url = {http://diglib.lib.utk.edu/dotsdata/Renfro_AnEvaluationOfTheBackcountryCampingPermitSystemsFor1983And1986_1989.pdf},
	author = {Renfro, James R and Van Cleave, Becki}
}
@article {5717,
	title = {Visitor Use Patterns at Great Smoky Mountains National Park},
	year = {1988},
	month = {August},
	institution = {Uplands Field Research Laboratory},
	address = {Gatlinburg, TN},
	keywords = {Economy, Tourism, Tourism -- Environmental impacts},
	issn = {SER-90},
	url = {http://archive.org/details/visitorusepatter00pein},
	author = {Peine, John Douglas and Renfro, James R}
}
