@misc{indiciaede7ddea0d6d4,
  title = {Expanding-aperture annular array.},
  author = {D R Dietz and S I Parks and M Linzer},
  year = {1979},
  doi = {10.1177/016173467900100105},
  url = {https://pubmed.ncbi.nlm.nih.gov/575813/},
  note = {Source identifier: 575813}
}