@misc{indiciae47c97e99813e,
  title = {The origin of neap-spring tidal cycles},
  author = {E.P. Kvale},
  year = {2006},
  doi = {10.1016/j.margeo.2006.10.001},
  url = {https://pubs.usgs.gov/publication/70028755},
  note = {Source identifier: 70028755}
}