@misc{indiciae239d58f8339c,
  title = {A method of fitting the gravity model based on the Poisson distribution.},
  author = {R Flowerdew and M Aitkin},
  year = {1982},
  doi = {10.1111/j.1467-9787.1982.tb00744.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/12265103/},
  note = {Source identifier: 12265103}
}