@misc{indiciaef5513f4f74ff,
  title = {Problems of transformation.},
  author = {J Leff},
  year = {1992},
  doi = {10.1177/002076409203800103},
  url = {https://pubmed.ncbi.nlm.nih.gov/1577565/},
  note = {Source identifier: 1577565}
}