@misc{indiciae626290c39dc5,
  title = {The forward concept.},
  author = {M F MAHON},
  year = {1956},
  doi = {10.1177/000841745602300104},
  url = {https://pubmed.ncbi.nlm.nih.gov/13316638/},
  note = {Source identifier: 13316638}
}