@misc{indiciae3769c7bf3ea7,
  title = {Dynamically variable spot size laser system},
  author = {Gradl, Paul R. and Hurst, John F. and Middleton, James R.},
  year = {2012},
  url = {https://ntrs.nasa.gov/citations/20120016374},
  note = {Source identifier: 20120016374}
}