@misc{indiciaeeaafefd9ba26,
  title = {Variable-interval punishment during variable-interval reinforcement.},
  author = {Y Filby and J B Appel},
  year = {1966},
  doi = {10.1901/jeab.1966.9-521},
  url = {https://pubmed.ncbi.nlm.nih.gov/5964507/},
  note = {Source identifier: 5964507}
}