@article {1297,
	title = {Changes in species richness and composition in European acidic grasslands over the past 70 years: the contribution of cumulative atmospheric nitrogen deposition},
	volume = {16},
	year = {2010},
	pages = {344-357},
	author = {Dupre, C. and Stevens, C.J. and Ranke, T. and Bleeker, A. and Peppler-Lisbach, C. and Gowing, D.J.G. and Dise, N.B. and Dorland, E. and Bobbink, R. and Diekmann, M.}
}
@article {1517,
	title = {Contribution of acidification and eutrophication to declines in species richness of calcifuges grasslands along a gradient of atmospheric nitrogen deposition.},
	volume = {24},
	year = {2010},
	pages = {478-484},
	author = {Stevens, C.J. and Thompson, K. and Grime, J.P. and Long, C.J. and Gowing, D.J.G.}
}
