@misc{indiciae23f1f745b005,
  title = {Is it possible to create a perfect external control system?},
  author = {P H Petersen},
  year = {1998},
  doi = {10.1080/00365519850186436},
  url = {https://pubmed.ncbi.nlm.nih.gov/9741813/},
  note = {Source identifier: 9741813}
}