@misc{indiciae324b5be9a721,
  title = {Evolution of the Los Frailes caldera, Cabo de Gata volcanic field, southeastern Spain},
  author = {Charles G. Cunningham and Antonio Arribas and J. J. Rytuba},
  year = {1989},
  doi = {10.3133/ofr89325},
  url = {https://pubs.usgs.gov/publication/ofr89325},
  note = {Source identifier: ofr89325}
}