@misc{indiciae96d16c925478,
  title = {2018 update to the U.S. Geological Survey national volcanic threat assessment},
  author = {John W. Ewert and Angela K. Diefenbach and David W. Ramsey},
  year = {2018},
  doi = {10.3133/sir20185140},
  url = {https://pubs.usgs.gov/publication/sir20185140},
  note = {Source identifier: sir20185140}
}