@misc{indiciaef85956c2bb85,
  title = {Visual perception of rigidity of solid shape.},
  author = {J J Koenderink and A J van Doorn},
  year = {1976},
  doi = {10.1007/bf00307859},
  url = {https://pubmed.ncbi.nlm.nih.gov/1022824/},
  note = {Source identifier: 1022824}
}