@misc{indiciaef567c1252aff,
  title = {High-Aperture-Efficiency Horn Antenna},
  author = {Pickens, Wesley and Hoppe, Daniel and Epp, Larry and Kahn, Abdur},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20110014852},
  note = {Source identifier: 20110014852}
}