@misc{indiciaec697530dc624,
  title = {Mandibular molar with three distal root canals.},
  author = {L E Quackenbush},
  year = {1986},
  doi = {10.1111/j.1600-9657.1986.tb00123.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3457702/},
  note = {Source identifier: 3457702}
}