@misc{indiciae67f8bc2a0fbe,
  title = {Retention--retainers may be forever.},
  author = {W S Parker},
  year = {1989},
  doi = {10.1016/0889-5406(89)90414-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/2729197/},
  note = {Source identifier: 2729197}
}