@misc{indiciaeb9539bef515b,
  title = {Improved Efficiency Type II Second Harmonic Generation},
  author = {Barnes, Norman P. and Walsh, Brian M. and Reichle, Donald J., Jr.},
  year = {2009},
  url = {https://ntrs.nasa.gov/citations/20090010108},
  note = {Source identifier: 20090010108}
}