@misc{indiciaeb897680b7748,
  title = {Geostatistical estimation of the bottom altitude and thickness of the Mississippi River Valley alluvial aquifer},
  author = {Lynn J. Torak and Jaime A. Painter},
  year = {2019},
  doi = {10.3133/sim3426},
  url = {https://pubs.usgs.gov/publication/sim3426},
  note = {Source identifier: sim3426}
}