@article {1563, title = {Evidence of widespread effects of ozone on crops and (semi-)natural vegetation in Europe (1990{\textendash}2006) in relation to AOT40- and flux-based risk maps.}, journal = {Global Change Biology}, volume = {17}, year = {2011}, pages = {592-613}, author = {Mills, G. and Hayes, F. and Simpson, D. and Emberson, L. and Norris, D. and Harmens, H. and Buker, P.} }