@misc{indiciae510cf1993a14,
  title = {Law without enforcement},
  author = {M Humphreys},
  year = {1999},
  doi = {10.1136/bmj.319.7213.859a},
  url = {https://pubmed.ncbi.nlm.nih.gov/10496855/},
  note = {Source identifier: 10496855}
}