@article{44796,
  author = {Michael Perring and Lars Hedin and Simon Levin and Megan McGroddy and de Claire Mazancourt},
  title = {Increased plant growth from nitrogen addition should conserve phosphorus in terrestrial ecosystems},
  year = {2008},
  journal = {Proceedings of the National Academy of Sciences},
  volume = {105},
  number = {6},
  pages = {1971{\textendash}1976},
  url = {http://www.pnas.org/content/105/6/1971.short},
  language = {eng},
}