@misc{indiciae9b95a27de9d0,
  title = {Longitudinal periodontometry.},
  author = {E Green and J A Clayton and M A Schork},
  year = {1971},
  doi = {10.1111/j.1600-0765.1971.tb00621.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4272023/},
  note = {Source identifier: 4272023}
}