@misc{indiciae0a7dab78f560,
  title = {Delayed discrimination and delayed matching in pigeons.},
  author = {L Smith},
  year = {1967},
  doi = {10.1901/jeab.1967.10-529},
  url = {https://pubmed.ncbi.nlm.nih.gov/6080830/},
  note = {Source identifier: 6080830}
}