@misc{indiciaeb699bafae6ce,
  title = {The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines},
  author = {Christopher G. Newhall and James W. Hendley and Peter H. Stauffer},
  year = {1997},
  doi = {10.3133/fs11397},
  url = {https://pubs.usgs.gov/publication/fs11397},
  note = {Source identifier: fs11397}
}