@article {1677,
	title = {Direct and indirect effects of nitrogen deposition on species composition change in calcareous grasslands},
	journal = {Global Change Biology},
	volume = {17},
	year = {2010},
	pages = {1871-83},
	author = {Van Den Berg, L.J.L. and Vergeer, P. and Rich, T.C.G. and Smart, S.M. and Guest, D. and Ashmore, M.R.}
}
