@misc{indiciaea19bd9440dc2,
  title = {Controls on geyser periodicity},
  author = {S. E. Ingebritsen and S.A. Rojstaczer},
  year = {1993},
  doi = {10.1126/science.262.5135.889},
  url = {https://pubs.usgs.gov/publication/70017927},
  note = {Source identifier: 70017927}
}