@misc{indiciae4de2c6a240f1,
  title = {Token reinforcement programs in special classes.},
  author = {S Axelrod},
  year = {1971},
  doi = {10.1177/001440297103700505},
  url = {https://pubmed.ncbi.nlm.nih.gov/5099992/},
  note = {Source identifier: 5099992}
}