@article {306,
	title = {A new potential air-quality criterion derived from vertical flux densitites of ozone and from plant response},
	journal = {Angewandte Botanik},
	volume = {67},
	year = {1993},
	pages = {9-13},
	author = {Grunhage, L. and Dammgen, U. and Haenel, H.D. and Jager, H.J. and Holl, A. and Schmitt, J. and Hanewald, K.}
}
