@misc{indiciaeecd1ed86fd0b,
  title = {Overview of Mount St. Helens volcanic eruption},
  author = {Robert I. Tilling},
  year = {1981},
  doi = {10.1117/12.931919},
  url = {https://pubs.usgs.gov/publication/70211096},
  note = {Source identifier: 70211096}
}