@misc{indiciaee817f01d951d,
  title = {The Hengill geothermal area, Iceland: variation of temperature gradients deduced from the maximum depth of seismogenesis},
  author = {G.R. Foulger},
  year = {1995},
  doi = {10.1016/0377-0273(94)00088-x},
  url = {https://pubs.usgs.gov/publication/70018949},
  note = {Source identifier: 70018949}
}