@misc{indiciae0b8247fc5a32,
  title = {[An instrument for testing visual acuity].},
  author = {V I Shostak and L I Balashevich},
  year = {1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/5508141/},
  note = {Source identifier: 5508141}
}