@article {1306, title = {Expansion of Sphagnum fallax in bogs: striking the balance between N and P availability}, journal = {Journal of Bryology}, volume = {25}, year = {2003}, pages = {83-90}, author = {Limpens, J. and Tomassen, H.B.M. and Berendse, F.} } @article {1305, title = {Stimulated growth of Betula pubescens and Molinia caerulea on ombrotrophic bogs: role of high levels of atmospheric nitrogen deposition}, journal = {Journal of Ecology}, volume = {91}, year = {2003}, pages = {357-370}, author = {Tomassen, H.B.M. and Smolders, A.J.P. and Lamers, L.P.M. and Roelofs, J.G.M.} }