@misc{indiciae49ce20b30a95,
  title = {Dissolved organic carbon and chromophoric dissolved organic matter properties of rivers in the USA},
  author = {Robert G.M. Spencer and Kenna D. Butler and George R. Aiken},
  year = {2012},
  doi = {10.1029/2011jg001928},
  url = {https://pubs.usgs.gov/publication/70039884},
  note = {Source identifier: 70039884}
}