@misc{indiciae72235e40da99,
  title = {Computing the direction of heading from affine image flow.},
  author = {J M Beusmans},
  year = {1993},
  doi = {10.1007/bf00200826},
  url = {https://pubmed.ncbi.nlm.nih.gov/8312404/},
  note = {Source identifier: 8312404}
}