@misc{indiciae3f4c0045a44c,
  title = {EGS over easy: Reinvigorating tired geothermal systems and upgrading marginal ones},
  author = {J. Sass and W. Duffield},
  year = {2003},
  url = {https://pubs.usgs.gov/publication/70206187},
  note = {Source identifier: 70206187}
}