@misc{indiciae4c79016ea89f,
  title = {Occurrence and sources of radium in groundwater associated with oil fields in the southern San Joaquin Valley, California},
  author = {Peter B. McMahon and Avner Vengosh and Tracy Davis and Matthew K. Landon and Rebecca L. Tyne and Michael T. Wright and Justin T. Kulongoski and Andrew G. Hunt and Peter H. Barry and A.J. Kondash and Z. Wang and Christopher J. Ballentine},
  year = {2019},
  doi = {10.1021/acs.est.9b02395},
  url = {https://pubs.usgs.gov/publication/70204862},
  note = {Source identifier: 70204862}
}