@misc{indiciae191342e82583,
  title = {Equivalence relations.},
  author = {M Sidman},
  year = {1997},
  doi = {10.1901/jeab.1997.68-258},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812861/},
  note = {Source identifier: 16812861}
}