@misc{indiciaeb40b772bef7c,
  title = {Summary of Environmental Monitoring and Assessment Program (EMAP) activities in South Dakota, 2000–2004},
  author = {Allen J. Heakin and Kathleen M. Neitzert and Jeffrey S. Shearer},
  year = {2006},
  doi = {10.3133/sir20065007},
  url = {https://pubs.usgs.gov/publication/sir20065007},
  note = {Source identifier: sir20065007}
}