@article {3059,
	title = {Seasonal Profiles of Leaf Ascorbic Acid Content and Redox State in Ozone-Sensitive Wildflowers},
	journal = {Environmental Pollution},
	volume = {143},
	year = {2006},
	month = {October},
	pages = {427-434},
	keywords = {Acid rain, Flora, Flowering plants},
	author = {Burkey, Kent O and Neufeld, Howard S and Souza, Lara and Chappelka, Arthur H and Davison, Alan W}
}
@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}
}
