@article {1643,
	title = {Single and Interactive Effects of Low Levels of O3, SO2 and NO2 on the Growth and Yield of Spring Rape.},
	volume = {72},
	year = {1991},
	pages = {269-286},
	author = {Adaros, G. and Weigel, H.J. and Jager, H.J.}
}
