@misc{indiciae54aea822099c,
  title = {Drug discrimination in rats under concurrent variable-interval variable-interval schedules.},
  author = {D E McMillan and W C Hardwick},
  year = {2000},
  doi = {10.1901/jeab.2000.73-103},
  url = {https://pubmed.ncbi.nlm.nih.gov/10682343/},
  note = {Source identifier: 10682343}
}