@misc{indiciaee61b871289aa,
  title = {Functional classes and equivalence relations.},
  author = {M Sidman and C K Wynne and R W Maguire and T Barnes},
  year = {1989},
  doi = {10.1901/jeab.1989.52-261},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812597/},
  note = {Source identifier: 16812597}
}