@misc{indiciae3c25a8683eba,
  title = {Double discrimination avoidance with a single stimulus.},
  author = {J D Keehn},
  year = {1968},
  doi = {10.1901/jeab.1968.11-467},
  url = {https://pubmed.ncbi.nlm.nih.gov/5672256/},
  note = {Source identifier: 5672256}
}