Dise NB, Ashmore MR, S B, Bleeker A, Bobbink R, de Vries W, Erisman JW, Spranger T, Stevens CJ, Van Den Berg LJL. Nitrogen deposition as a threat to European Terrestrial Biodiversity. In: European Nitrogen Assessment. European Nitrogen Assessment. Cambridge University Press; 2011. pp. 463-494.

Bobbink R, Hicks K, Galloway J, Spranger T, Alkemade R, Ashmore M, Bustamante M, Cinderby S, Davidson E, Dentener F, et al. Global assessment of nitrogen deposition effects on terrestrial plant diversity: a synthesis. Ecological Applications. 2010  ;20(1):30-59.