@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 {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 {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 {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}
}
