@misc{indiciaeeb7020895804,
  title = {Functional differences between upright and rotated images.},
  author = {C E Roldan and W A Phillips},
  year = {1980},
  doi = {10.1080/14640748008401834},
  url = {https://pubmed.ncbi.nlm.nih.gov/7422817/},
  note = {Source identifier: 7422817}
}