@misc{indiciae99f0192d05f7,
  title = {Root canals in two-rooted maxillary second molars.},
  author = {O Carlsen and V Alexandersen},
  year = {1997},
  url = {https://pubmed.ncbi.nlm.nih.gov/9477024/},
  note = {Source identifier: 9477024}
}