@misc{indiciae2dde625f5c25,
  title = {Permanent retention with a nonparallel pin retainer.},
  author = {G Andreasen and W W Johnson},
  year = {1970},
  doi = {10.1016/s0002-9416(70)90222-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/5265010/},
  note = {Source identifier: 5265010}
}