@article {1457,
	title = {Effects of ozone on inter- and intra-species competition and photosynthesis in mesocosms of Lolium perenne and Trifolium repens.},
	volume = {157},
	year = {2009},
	pages = {208-214},
	author = {Hayes, F. and Mills, G. and Ashmore, M.}
}
