@misc{indiciaeafdace13d945,
  title = {Contingency contracting with polydrug-abusing methadone patients.},
  author = {S Magura and C Casriel and D S Goldsmith and D L Strug and D S Lipton},
  year = {1988},
  doi = {10.1016/0306-4603(88)90035-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/3284282/},
  note = {Source identifier: 3284282}
}