@misc{indiciaed942f2382d2f,
  title = {Rigidity; a flexible concept.},
  author = {S M CHOWN},
  year = {1959},
  doi = {10.1037/h0042732},
  url = {https://pubmed.ncbi.nlm.nih.gov/13658296/},
  note = {Source identifier: 13658296}
}