@misc{indiciaef9abc47ed0d8,
  title = {Micro-Fresnel Zone Plate Optical Devices Using Densely Accumulated Ray Points},
  author = {Choi, Sang H. and Park, Yeonjoon and King, Glen C. and Elliott, James R.},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20110015901},
  note = {Source identifier: 20110015901}
}