@misc{indiciae6a60f7ee840d,
  title = {An orthogonal oriented quadrature hexagonal image pyramid},
  author = {Watson, Andrew B. and Ahumada, Albert J., Jr.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880005248},
  note = {Source identifier: 19880005248}
}