@misc{indiciaef32c2d3f3719,
  title = {Surface perception in pictures.},
  author = {J J Koenderink and A J van Doorn and A M Kappers},
  year = {1992},
  doi = {10.3758/bf03206710},
  url = {https://pubmed.ncbi.nlm.nih.gov/1437481/},
  note = {Source identifier: 1437481}
}