@article {3642,
	title = {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},
	journal = {Environmental Pollution},
	volume = {160},
	year = {2012},
	pages = {74-81},
	keywords = {Flowering plants, Pollution},
	url = {http://www.sciencedirect.com/science/article/pii/S0269749111005161},
	author = {Neufeld, Howard S and Peoples, Seth J and Davidson, Alan W and Chappelka, Arthur H and Somers, Greg L and Thomley, Jill E and Booker, Fitzgerald L}
}
@article {6105,
	title = {Visible Foliar Injury Caused by Ozone Alters the Relationship between SPAD Meter Readings and Chlorophyll Concentrations in Cutleaf Coneflower},
	journal = {Photosynthesis Research},
	volume = {87},
	year = {2006},
	month = {March},
	pages = {281-286},
	keywords = {Air pollution, Flowering plants, Ozone},
	author = {Neufeld, Howard S and Chappelka, Arthur H and Somers, Greg L and Burkey, Kent O and Davidson, Alan W and Finkelstein, Peter L}
}
