@misc{indiciaeca9014fae3ee,
  title = {Detection of second-order structure in optical flow fields.},
  author = {S F te Pas and A M Kappers and J J Koenderink},
  year = {1997},
  doi = {10.1364/josaa.14.000767},
  url = {https://pubmed.ncbi.nlm.nih.gov/9088089/},
  note = {Source identifier: 9088089}
}