@misc{indiciae99ea66ff7091,
  title = {Resonant-fatigue cracking apparatus},
  author = {Dorner, J. P. and Pierce, W. S. and Shannon, J. L., Jr.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19790000520},
  note = {Source identifier: 19790000520}
}