@misc{indiciae02b1e8c70fdc,
  title = {Yellowstone Volcano Observatory 2021 annual report},
  author = {Yellowstone Volcano Observatory},
  year = {2022},
  doi = {10.3133/cir1494},
  url = {https://pubs.usgs.gov/publication/cir1494},
  note = {Source identifier: cir1494}
}