@misc{indiciae1e1f21fbc03f,
  title = {Friction loading device enables accurate testing of brittle materials},
  author = {Hengstenberg, T. F. and Zibritosky, G.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660000344},
  note = {Source identifier: 19660000344}
}