@misc{indiciae611470b92cb9,
  title = {Learning-set formation in pigeons.},
  author = {H P ZEIGLER},
  year = {1961},
  doi = {10.1037/h0041047},
  url = {https://pubmed.ncbi.nlm.nih.gov/13788104/},
  note = {Source identifier: 13788104}
}