@misc{indiciae8ebd3b59e823,
  title = {Caldera collapse in the Galápagos Islands, 1968},
  author = {T. Simkin and K. A. Howard},
  year = {1970},
  doi = {10.1126/science.169.3944.429},
  url = {https://pubs.usgs.gov/publication/70010084},
  note = {Source identifier: 70010084}
}