@misc{indiciaed63c1667f18c,
  title = {In situ and laboratory geotechnical tests of the Pierre Shale near Hayes, South Dakota — A characterization of engineering behavior},
  author = {Thomas C. Nichols and Donley S. Collins and Richard R. Davidson},
  year = {1986},
  doi = {10.1139/t86-028},
  url = {https://pubs.usgs.gov/publication/70015529},
  note = {Source identifier: 70015529}
}