@misc{indiciae30ff6d04a595,
  title = {Crisis theory: a definitional study.},
  author = {H A Halpern},
  year = {1973},
  doi = {10.1007/bf01410870},
  url = {https://pubmed.ncbi.nlm.nih.gov/4148620/},
  note = {Source identifier: 4148620}
}