@misc{indiciae25e860f6fb37,
  title = {Concept formation in an ordering task.},
  author = {L H SHAFFER},
  year = {1961},
  doi = {10.1111/j.2044-8295.1961.tb00801.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/13911110/},
  note = {Source identifier: 13911110}
}