@misc{indiciae30bedb0b78ba,
  title = {The brain a geometry engine.},
  author = {J J Koenderink},
  year = {1990},
  doi = {10.1007/bf00877519},
  url = {https://pubmed.ncbi.nlm.nih.gov/2281124/},
  note = {Source identifier: 2281124}
}