@misc{indiciaeeb4deb4e9044,
  title = {Contingency contracting with heroin addicts.},
  author = {D Beatty},
  year = {1978},
  doi = {10.3109/10826087809039286},
  url = {https://pubmed.ncbi.nlm.nih.gov/689782/},
  note = {Source identifier: 689782}
}