@misc{indiciaef319380bb018,
  title = {A multiple-unit pigeon apparatus.},
  author = {C B FERSTER and M H APRISON},
  year = {1960},
  doi = {10.1901/jeab.1960.3-165},
  url = {https://pubmed.ncbi.nlm.nih.gov/13822529/},
  note = {Source identifier: 13822529}
}