@misc{indiciae8e81b59fbb35,
  title = {Video endoscopy. Fundamentals and problems.},
  author = {L Demling and H J Hagel},
  year = {1985},
  doi = {10.1055/s-2007-1018491},
  url = {https://pubmed.ncbi.nlm.nih.gov/4054060/},
  note = {Source identifier: 4054060}
}