@misc{indiciaeb539c6d7e51a,
  title = {Light source position in the perception of object shape.},
  author = {K Berbaum and T Bever and C S Chung},
  year = {1983},
  doi = {10.1068/p120411},
  url = {https://pubmed.ncbi.nlm.nih.gov/6672736/},
  note = {Source identifier: 6672736}
}