@misc{indiciae23db58cd8f1d,
  title = {[Practical implant biometry--a comparative study of currently available instruments].},
  author = {C Maass and R Chrobok},
  year = {1986},
  url = {https://pubmed.ncbi.nlm.nih.gov/3817693/},
  note = {Source identifier: 3817693}
}