@misc{indiciae57438d2ba08e,
  title = {Signal-controlled responding.},
  author = {P Lewis and M Stoyak},
  year = {1979},
  doi = {10.1901/jeab.1979.31-115},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812116/},
  note = {Source identifier: 16812116}
}