@misc{indiciae3900fac50f02,
  title = {Factors affecting conditional discrimination learning by pigeons.},
  author = {D R Thomas and T Stengel and L Sherman and M Woodford},
  year = {1987},
  doi = {10.1901/jeab.1987.48-277},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812493/},
  note = {Source identifier: 16812493}
}