@misc{indiciaebb4f301f67c3,
  title = {Investigation radon and helium as possible fluid-phase precursors to earthquakes},
  author = {Harmon Craig and Y. Chung and J.E. Lupton and S. Damasceno and R. Poreda},
  year = {1981},
  doi = {10.3133/ofr81278},
  url = {https://pubs.usgs.gov/publication/ofr81278},
  note = {Source identifier: ofr81278}
}