@misc{indiciae10dbfef037fb,
  title = {Eruptions on Mount Etna during 1979},
  author = {J. Guest and J. Murray and C. Kilburn and R. Lopes},
  year = {1980},
  url = {https://pubs.usgs.gov/publication/70170291},
  note = {Source identifier: 70170291}
}