@misc{indiciaec8c79fc9f533,
  title = {Program for impact testing of spar-shell fan blades, test report},
  author = {Ravenhall, R. and Salemme, C. T.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19800012843},
  note = {Source identifier: 19800012843}
}