@misc{indiciae4ac324683263,
  title = {Ultrastructural study on human root caries.},
  author = {R M Frank and P Steuer and J Hemmerle},
  year = {1989},
  doi = {10.1159/000261180},
  url = {https://pubmed.ncbi.nlm.nih.gov/2790852/},
  note = {Source identifier: 2790852}
}