@misc{indiciaee93142bff4a2,
  title = {A CONTINGENT REINFORCER.},
  author = {J R WITTENBORN and E ADLER and A LUKACS and J SHARROCK and J J SIMMONS},
  year = {1963},
  doi = {10.1037/h0041710},
  url = {https://pubmed.ncbi.nlm.nih.gov/14049778/},
  note = {Source identifier: 14049778}
}