@misc{indiciae91dbd87d833f,
  title = {Detecting overpenetration of electron-beam welds},
  author = {Macfarlane, D. I. and Young, F. D.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19780000586},
  note = {Source identifier: 19780000586}
}