@misc{indiciae9d8ac1d7fd23,
  title = {Chemical and isotopic evidence of nitrogen transformation in the Mississippi River, 1997-98},
  author = {William A. Battaglin and Carol Kendall and Cecily C.Y. Chang and Steven R. Silva and Donald H. Campbell},
  year = {2001},
  doi = {10.1002/hyp.214},
  url = {https://pubs.usgs.gov/publication/70243310},
  note = {Source identifier: 70243310}
}