@misc{indiciae9d3521fc9f0a,
  title = {Removing tidal-period variations from time-series data using low-pass digital filters},
  author = {Roy A. Walters and Cynthia Heston},
  year = {1982},
  doi = {10.1175/1520-0485(1982)012<0112:rtpvft>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70174408},
  note = {Source identifier: 70174408}
}