@misc{indiciaef31e6c51cbe2,
  title = {Compilation of Disruptions to Airports by Volcanic Activity (Version 1.0, 1944-2006)},
  author = {Marianne Guffanti and Gari C. Mayberry and Thomas J. Casadevall and Richard Wunderman},
  year = {2008},
  doi = {10.3133/ofr20071256},
  url = {https://pubs.usgs.gov/publication/ofr20071256},
  note = {Source identifier: ofr20071256}
}