@misc{indiciaeb94bf541206b,
  title = {Simulation of spring discharge from a limestone aquifer in Iowa, USA},
  author = {Y.-K. Zhang and E.-W. Bai and R. Libra and R. Rowden and H. Liu},
  year = {2012},
  doi = {10.1007/s100400050087},
  url = {https://pubs.usgs.gov/publication/70017723},
  note = {Source identifier: 70017723}
}