@misc{indiciae9c06aa46b531,
  title = {Evaluation of the cone penetrometer for liquefaction hazard assessment},
  author = {Geoffrey R. Martin and Bruce J. Douglas},
  year = {1981},
  doi = {10.3133/ofr81284},
  url = {https://pubs.usgs.gov/publication/ofr81284},
  note = {Source identifier: ofr81284}
}