@misc{indiciaee3d358ae2cf6,
  title = {A prototype global volcano surveillance system and identification of a volcano-tectonic fault in Central America},
  author = {P.L. Ward},
  year = {1973},
  doi = {10.1007/bf02597640},
  url = {https://pubs.usgs.gov/publication/70241226},
  note = {Source identifier: 70241226}
}