@misc{indiciaee21211669f18,
  title = {Creating potentiometric surfaces from combined water well and oil well data in the midcontinent of the United States},
  author = {Nicholas J. Gianoutsos and Philip H. Nelson},
  year = {2013},
  url = {https://pubs.usgs.gov/publication/70074147},
  note = {Source identifier: 70074147}
}