@misc{indiciaec23c53678ba0,
  title = {A Simple Tiltmeter},
  author = {Dix, M. G. and Harrison, D. R. and Edwards, T. M.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19810000325},
  note = {Source identifier: 19810000325}
}