@misc{indiciae49caf91a4c85,
  title = {Modified Oscillograph for Impacting Composite Materials},
  author = {Penn, B. and Ledbetter, F. E., III and Clemons, J. M. and Daniels, J. and White, W.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19830000406},
  note = {Source identifier: 19830000406}
}