@misc{indiciaeabb7edf04667,
  title = {Geothermal resources of Sao Miguel Island, Azores, Portugal},
  author = {W. A. Duffield and L.J. Muffler},
  year = {1984},
  doi = {10.3133/ofr84287},
  url = {https://pubs.usgs.gov/publication/ofr84287},
  note = {Source identifier: ofr84287}
}