@misc{indiciae10a97d320d02,
  title = {The distribution of nitrogen species and adsorption of ammonium in sediments from the tidal Potomac River and estuary},
  author = {N.S. Simon and M.M. Kennedy},
  year = {1987},
  doi = {10.1016/0272-7714(87)90022-9},
  url = {https://pubs.usgs.gov/publication/70015250},
  note = {Source identifier: 70015250}
}