@article {1571,
	title = {Terricolous lichens as indicators of nitrogen deposition: Evidence from national records.},
	volume = {20},
	year = {2012},
	pages = {196-203},
	author = {Stevens, C.J. and Smart, S.M. and Henrys, P.A. and Maskell, L.C. and Crowe, A. and Simkin, J. and Cheffings, C.M. and Whitfield, C. and Gowing, D.J.G. and Rowe, E.C. and Dore, A.J. and Emmett, B.A.}
}
@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.}
}
