@misc{indiciae070239165053,
  title = {Upper crust beneath the central Illinois basin, United States},
  author = {J.H. McBride and Dennis R. Kolata},
  year = {1999},
  doi = {10.1130/0016-7606(1999)111<0375:ucbtci>2.3.co;2},
  url = {https://pubs.usgs.gov/publication/70021841},
  note = {Source identifier: 70021841}
}