@misc{indiciaeec565004d4c7,
  title = {Visual processing of rotary motion.},
  author = {P Werkhoven and J J Koenderink},
  year = {1991},
  doi = {10.3758/bf03211618},
  url = {https://pubmed.ncbi.nlm.nih.gov/2011455/},
  note = {Source identifier: 2011455}
}