@misc{indiciaed98e0e30cbc8,
  title = {An analysis of migratory systems: 2. Operational framework.},
  author = {P Kanaroglou and K Liaw and Y Y Papageorgiou},
  year = {1986},
  url = {https://pubmed.ncbi.nlm.nih.gov/12267897/},
  note = {Source identifier: 12267897}
}