@misc{indiciae6be442ee25aa,
  title = {Relative locations among moving spots and visual vector analysis.},
  author = {T Mori},
  year = {1979},
  doi = {10.2466/pms.1979.48.2.587},
  url = {https://pubmed.ncbi.nlm.nih.gov/461059/},
  note = {Source identifier: 461059}
}