@misc{indiciae23bfbb48026f,
  title = {Paleosols in central Illinois as potential sources of ammonium in groundwater},
  author = {Justin J. G. Glessner and William R. Roy},
  year = {2009},
  doi = {10.1111/j.1745-6592.2009.01257.x},
  url = {https://pubs.usgs.gov/publication/70034464},
  note = {Source identifier: 70034464}
}