@misc{indiciae0a1f38392c0a,
  title = {Microgravity methods for characterization of groundwater-storage changes and aquifer properties in the karstic Madison aquifer in the Black Hills of South Dakota, 2009-12},
  author = {Karl R. Koth and Andrew J. Long},
  year = {2012},
  doi = {10.3133/sir20125158},
  url = {https://pubs.usgs.gov/publication/sir20125158},
  note = {Source identifier: sir20125158}
}