@misc{indiciaec2f155de83c8,
  title = {Measurements of HFC-134a and HCFC-22 in groundwater and unsaturated-zone air: implications for HFCs and HCFCs as dating tracers},
  author = {Karl B. Haase and Eurybiades Busenberg and Niel Plummer and Gerolamo Casile and Ward E. Sanford},
  year = {2014},
  doi = {10.1016/j.chemgeo.2014.07.016},
  url = {https://pubs.usgs.gov/publication/70129605},
  note = {Source identifier: 70129605}
}