@misc{indiciae4fb064fc1f08,
  title = {A comparison of recharge rates in aquifers of the United States based on groundwater-age data},
  author = {P.B. McMahon and Niel Plummer and J.K. Böhlke and S.D. Shapiro and S.R. Hinkle},
  year = {2011},
  doi = {10.1007/s10040-011-0722-5},
  url = {https://pubs.usgs.gov/publication/70034203},
  note = {Source identifier: 70034203}
}