@misc{indiciae4df7be242426,
  title = {Laser machining apparatus Patent},
  author = {Chioa, R. Y. and Garmire, E. M. and Townes, C. H.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710017659},
  note = {Source identifier: 19710017659}
}