@misc{indiciaec98acaa9edbc,
  title = {Rethinking groundwater flow on the South Rim of the Grand Canyon, USA: Characterizing recharge sources and flow paths with environmental tracers},
  author = {John E. Solder and Kimberly R. Beisner and Jessica R. Anderson and Donald J. Bills},
  year = {2020},
  doi = {10.1007/s10040-020-02193-z},
  url = {https://pubs.usgs.gov/publication/70210993},
  note = {Source identifier: 70210993}
}