@misc{indiciae812d26e8eda5,
  title = {Monitoring Weld Penetration Optically From Within Torch},
  author = {Smith, Matthew A. and Gilbert, Jeffrey L. and Linsacum, Deron L. and Gutlow, David A.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930000528},
  note = {Source identifier: 19930000528}
}