@misc{indiciaecb40058d92d5,
  title = {The Einstellung effect and variability of behavior.},
  author = {R H FORGUS},
  year = {1957},
  doi = {10.1080/00221309.1957.9920330},
  url = {https://pubmed.ncbi.nlm.nih.gov/13428996/},
  note = {Source identifier: 13428996}
}