@misc{indiciaef24404331010,
  title = {A hexagonal orthogonal-oriented pyramid as a model of image representation in visual cortex},
  author = {Watson, Andrew B. and Ahumada, Albert J., Jr.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890038305},
  note = {Source identifier: 19890038305}
}