@misc{indiciaea779c1cb716b,
  title = {Intransitivity, the spatial interaction model, and U.S. migration streams.},
  author = {M F Goodchild and T R Smith},
  year = {1980},
  url = {https://pubmed.ncbi.nlm.nih.gov/12278881/},
  note = {Source identifier: 12278881}
}