@misc{indiciae3bd5af2eb4fd,
  title = {Dual-observation gonioscope.},
  author = {M M Krasnov},
  year = {1970},
  doi = {10.1016/0002-9394(70)90515-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/5477178/},
  note = {Source identifier: 5477178}
}