Harmens H, Norris DA, Cooper DM, Mills G, Steinnes E, Kubin E, Thoni L, Aboal JR, Alber R, Carballeira A, et al. Nitrogen concentrations in mosses indicate the spatial distribution of atmospheric nitrogen deposition in Europe. Environmental Pollution. 2011  ;159:2852-2860.

Solga A, Burkhardt J, Zechmeister HG, Frahm JP. Nitrogen content, 15N natural abundance and biomass of the two pleurocarpous mosses Pleurozium schreberi (Brid.) Mitt.and Scleropodium purum (Hedw.) Limpr. in relation to atmospheric nitrogen deposition. Environmental Pollution. 2005  ;134:465-473.