@misc{indiciaef5c20f349b7f,
  title = {On the formation of calderas during ignimbrite eruptions},
  author = {T. H. Druitt and R. S. J. Sparks},
  year = {1984},
  doi = {10.1038/310679a0},
  url = {https://pubs.usgs.gov/publication/70013199},
  note = {Source identifier: 70013199}
}