@misc{indiciaed79a21e61ea8,
  title = {Deductive reasoning in pigeons.},
  author = {L von Fersen and C D Wynne and J D Delius and J E Staddon},
  year = {1990},
  doi = {10.1007/bf01139271},
  url = {https://pubmed.ncbi.nlm.nih.gov/2074897/},
  note = {Source identifier: 2074897}
}