@misc{indiciae74067ccdf681,
  title = {Constructing event trees for volcanic crises},
  author = {C. Newhall and R. Hoblitt},
  year = {2001},
  doi = {10.1007/s004450100173},
  url = {https://pubs.usgs.gov/publication/70024848},
  note = {Source identifier: 70024848}
}