@article {1521,
	title = {The effects of tropospheric ozone on the species dynamics of calcareous grassland.},
	journal = {Environmental Pollution},
	volume = {144},
	year = {2006},
	pages = {500-509},
	author = {Thwaites, R.H. and Asmore, M.R. and Morton, A.J. and Pakeman, R.J.}
}
