@misc{indiciaeec0d7db1703c,
  title = {A direct-view goniolens.},
  author = {F M Kapetansky and M A Johnstone},
  year = {1982},
  doi = {10.1016/0002-9394(82)90421-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/7065097/},
  note = {Source identifier: 7065097}
}