@misc{indiciaecf7eac4c9c38,
  title = {Frictional forces in fixed appliances.},
  author = {D C Tidy},
  year = {1989},
  doi = {10.1016/0889-5406(89)90462-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/2773871/},
  note = {Source identifier: 2773871}
}