@misc{indiciaec109f2e9deb7,
  title = {Regional trends in aquatic recovery from acidification in North America and Europe},
  author = {J.L. Stoddard and D.S. Jeffries and A. Lukewille and T.A. Clair and P.J. Dillon and C. T. Driscoll and M. Forsius and M. Johannessen and J. S. Kahl and J.H. Kellogg and A. Kemp and J. Mannlo and D.T. Monteith and Peter S. Murdoch and S. Patrick and A. Rebsdorl and B.L. Skjelkvale and M.P. Stainton and T. Traaen and H. Van Dam and K.E. Webster and J. Wleting and A. Wllander},
  year = {1999},
  doi = {10.1038/44114},
  url = {https://pubs.usgs.gov/publication/70021183},
  note = {Source identifier: 70021183}
}