@misc{indiciae80c5a0ac39c1,
  title = {Semipermanent GPS (SPGPS) as a volcano monitoring tool: Rationale, method, and applications},
  author = {Daniel Dzurisin and Michael Lisowski and Charles W. Wicks},
  year = {2017},
  doi = {10.1016/j.jvolgeores.2017.03.007},
  url = {https://pubs.usgs.gov/publication/70191087},
  note = {Source identifier: 70191087}
}