@misc{indiciae40c60d4cafee,
  title = {The circulator concept.},
  author = {L E Morris},
  year = {1974},
  doi = {10.1097/00004311-197412030-00011},
  url = {https://pubmed.ncbi.nlm.nih.gov/4426713/},
  note = {Source identifier: 4426713}
}