@article {1137,
	title = {Assessing the chronic effects of atmospheric tetrachloroethylene (PER) on plants. Note 48},
	journal = {Plant Research International},
	year = {2000},
	publisher = {Wageningen},
	address = {Netherlands},
	author = {Franzaring, J. and Van der Eerden, L.J.M. and Van Dijk, C.J. and Helsper J.P.F.G. and Pikaar P.J.J. and Nijhuis E.H. and Tonneijck A.E.G.}
}
@article {1444,
	title = {Growth responses to ozone in plant species from wetlands.},
	journal = {Environmental and Experimental Botany},
	volume = {44},
	year = {2000},
	pages = {39-48},
	author = {Franzaring, J. and Tonneijck A.E.G. and Kooijman, A.W.M. and Dueck, T.A.}
}
