@misc{indiciae3ff32457fe3a,
  title = {Lahar hazards at Agua volcano, Guatemala},
  author = {S. P. Schilling and J.W. Vallance and O. Matias and M.M. Howell},
  year = {2001},
  doi = {10.3133/ofr01432},
  url = {https://pubs.usgs.gov/publication/ofr01432},
  note = {Source identifier: ofr01432}
}