@misc{indiciae93e2c7bb97ad,
  title = {Magmatic precursors to the 18 May 1980 eruption of Mount St. Helens, USA},
  author = {K. V. Cashman and R. Hoblitt},
  year = {2004},
  doi = {10.1130/g20078.1},
  url = {https://pubs.usgs.gov/publication/70027464},
  note = {Source identifier: 70027464}
}