@article {1633,
	title = {Effects of SO2, NO2, and O3 on Population Development and Morphological and Physiological Parameters of Native Herb Layer Species in a Beech Forest.},
	journal = {Environmental Pollution},
	volume = {58},
	year = {1989},
	pages = {281-302},
	author = {Steubing, L. and Fangmeier, A. and Both, R. and Frankenfeld, M.}
}
