@misc{indiciae6eac3ab8c088,
  title = {An analytical solution to obtain the optimum source location using multiple direction finders on a spherical surface},
  author = {Orville, Richard E., Jr.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880025778},
  note = {Source identifier: 19880025778}
}