Sheppard LJ, Leith ID, Mizunuma T, Leeson S, Kivimaki SK, Cape JN, van Dijk N, Leaver D, Sutton MA, Fowler D, et al. Inertia in an ombrotrophic bog ecosystem in response to nine years? realistic perturbation by wet deposition of nitrogen, separated by form. Global change Biology . 2013  .

Tipping E, Henrys PA, Maskell LC, Smart SM. Nitrogen deposition effects on plant species diversity; threshold loads. Environmental Pollution. 2013  ;179:218-223.

Stevens CJ, Smart SM, Henrys PA, Maskell LC, Crowe A, Simkin J, Cheffings CM, Whitfield C, Gowing DJG, Rowe EC, et al. Terricolous lichens as indicators of nitrogen deposition: Evidence from national records. Ecological Indicators. 2012  ;20:196-203.

Stevens CJ, Smart SM, Henrys P, Maskell LC, Walker KJ, Preston CD, Crowe A, Rowe E, Gowing DJ, Emmett BA. Collation of evidence of nitrogen impacts on vegetation in relation to UK biodiversity objectives. JNCC; 2011.

Emmett BA, Rowe EC, Stevens CJ, Gowing DJ, Henrys PA, Maskell LC, Smart SM. Interpretation of evidence of nitrogen impacts on vegetation in relation to UK biodiversity objectives. JNCC; 2011.

Rowe EC, Jones MLM, Henrys PA, Smart SM, Tipping E, Mills RTE, Evans CD. Predicting effects of N pollutant load on plant species based on a dynamic soil eutrophication indicator. Bangor: Countryside Council for Wales; 2011 p. 39.

Van Den Berg LJL, Vergeer P, Rich TCG, Smart SM, Guest D, Ashmore MR. Direct and indirect effects of nitrogen deposition on species composition change in calcareous grasslands. Global Change Biology. 2010  ;17:1871-83.

Maskell LC, Smart SM, Bullock JM, Thompson K, Stevens CJ. Nitrogen deposition causes widespread species loss in British Habitats. Global Change Biology. 2010  ;16: 671-679.

Stevens CJ, Maskell LC, Smart SM, Caporn SJM, Dise NB, Gowing DJ. Identifying indicators of atmospheric nitrogen deposition impacts in acid grasslands. Biological Conservation. 2009  ;142:2069-2075.

Kirby K, Smart SM, Black HI, Bunce RGH, Corney PM, Smithers RJ. Long-term ecological change in British woodlands (1971 - 2001). Peterborough: English Nature; 2005 pp. 1-139.

Smart SM, Ashmore MR, Hornung M. Detecting the signal of atmospheric N  deposition in recent national-scale vegetation change across Britain. Water, Air and  Soil Pollution: Focus. 2004  ;4:269?278.

Haines-Young R, Barr CJ, Firbank LG, Furse M, Howard DC, McGowan G, Petit S, Smart SM, Watkins JW. Changing landscapes, habitats and vegetation diversity across Great Britain. Journal of Environmental Management. 2003  ;67(3):267-281.

Haines-Young RH, Barr CJ, Black HIG, Briggs DJ, Bunce RGH, Clarke RT, Cooper A, Dawson FH, Firbanks LG, Fuller RM, et al. Accounting for nature: assessing habitats in the UK countryside. London: DETR; 2000.

Haines-Young RH, Barr CJ, Black HIJ, Briggs DJ, Bunce RGH, Clarke RT, Cooper A, Dawson FH, Firbank LG, Fuller RM, et al. Accounting for nature: assessing habitats in the UK countryside. London: DETR; 2000.