@misc{indiciae966f46ea0167,
  title = {Empirical critical loads of atmospheric nitrogen deposition for nutrient enrichment and acidification of sensitive US lakes},
  author = {Jill Baron and C. T. Driscoll and J.L. Stoddard and E.E. Richer},
  year = {2011},
  doi = {10.1525/bio.2011.61.8.6},
  url = {https://pubs.usgs.gov/publication/70036761},
  note = {Source identifier: 70036761}
}