@misc{indiciae78df9e0d3ec8,
  title = {Green star and underclass.},
  author = {R R Gordon},
  year = {1990},
  doi = {10.1016/0140-6736(90)91575-u},
  url = {https://pubmed.ncbi.nlm.nih.gov/1973243/},
  note = {Source identifier: 1973243}
}