@misc{indiciae02fe68b20f17,
  title = {Determination of Manning's N from vertical‐velocity curves},
  author = {Walter B. Langbein},
  year = {2014},
  doi = {10.1029/tr021i002p00618},
  url = {https://pubs.usgs.gov/publication/70213801},
  note = {Source identifier: 70213801}
}