@misc{indiciae2fb85abd6db1,
  title = {US immigration controls.},
  author = {M Whiteside and S Lucas},
  year = {1990},
  doi = {10.1016/0140-6736(90)90643-j},
  url = {https://pubmed.ncbi.nlm.nih.gov/1967791/},
  note = {Source identifier: 1967791}
}