@misc{indiciaed3fd22eb409e,
  title = {Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA},
  author = {Thomas W. Custer and Christine M. Custer and Wayne E. Thogmartin and Paul M. Dummer and Ronald Rossmann and Kevin P. Kenow and Michael W. Meyer},
  year = {2012},
  doi = {10.1016/j.envpol.2011.12.017},
  url = {https://pubs.usgs.gov/publication/70037930},
  note = {Source identifier: 70037930}
}