@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}
}
@article {3243,
	title = {Sub-Canopy Deposition of Ozone in a Stand of Cutleaf Coneflower},
	journal = {Environmental Pollution},
	volume = {131},
	year = {2004},
	month = {September},
	pages = {295-303},
	keywords = {Air quality, Flora, Ozone, Pollution},
	url = {http://dx.doi.org/10.1016/j.envpol.2004.02.029},
	author = {Finkelstein, Peter L and Davison, Alan W and Neufeld, Howard S and Meyers, Tilden P and Chappelka, Arthur H}
}
@article {3171,
	title = {Interpreting Spatial Variation in Ozone Symptoms Shown by Cutleaf Cone Flower, Rudbeckia laciniata L},
	journal = {Environmental Pollution},
	volume = {125},
	year = {2003},
	pages = {61-70},
	keywords = {Air quality, Ecosystem, Flora, Flowering plants, Ozone, Pollution},
	author = {Davison, Alan W and Neufeld, Howard S and Chappelka, Arthur H and Wolff, K. and Finkelstein, Peter L}
}
