1. W. Steffen, K. Richardson, J. Rockström, S. E. Cornell, I. Fetzer, E. M. Bennett, R. Biggs, S. R. Carpenter, W. de Vries, C. A. de Wit, C. Folke, D. Gerten, J. Heinke, G. M. Mace, L. M. Persson, V. Ramanathan, B. Reyers, and S. Sörlin, Sci. Express January, 1–15 (2015).
2. M. A. Sutton, C. Howard, J. W. Erisman, G. Billen, A. Bleeker, P. Grennfelt, H. Van Grinsven, and B. Grizzetti, The European Nitrogen Assessment: Sources, Effects and Policy Perspectives (Cambridge Univ. Press, Cambridge, 2011).
3. H. Majdi and P. Kangas, Ecoscience 2 (4), 199–205 (1997).
4. D. V. Veselkin and S. Yu. Kaigorodova, Agrokhimiya, No. 11, 54–62 (2013).
5. D. V. Kasimov and V. D. Kasimov, Dynamics of Condition and Adaption of Forest Ecosystems under Long-Term Atmosphere Pollution in Reserve Museum “Yasnaya Polyana” (All-Russ. Res. Inst. or Silviculture and Mechanization of Forestry, Pushkino, 2013) [in Russian].