@misc{indiciaef8b0486f8e6c,
  title = {A solid inclusion borehole probe to determine 3-dimensional stress changes at a point in a rock mass},
  author = {Thomas C. Nichols and John F. Abel and Fitzhugh T. Lee},
  year = {1967},
  doi = {10.3133/ofr67169},
  url = {https://pubs.usgs.gov/publication/ofr67169},
  note = {Source identifier: ofr67169}
}