@misc{indiciae2475f1f819a4,
  title = {Solar simulator optimization through defocusing - A result of computerized optical system ray-tracing study},
  author = {Riise, H. N.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690000899},
  note = {Source identifier: 19690000899}
}