@misc{indiciaeca5d25dd1761,
  title = {On resolving 2M - 1 narrow-band signals with an M sensor uniform linear array},
  author = {Williams, Douglas B. and Johnson, Don H.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920054654},
  note = {Source identifier: 19920054654}
}