@misc{indiciae90b4cbbb8202,
  title = {Test results of a diffraction grating beam combiner},
  author = {Rall, Jonathan A. and Spadin, Paul L. and Zimmerman, R. K. and Maynard, W.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910038178},
  note = {Source identifier: 19910038178}
}