@misc{indiciae85aa3a12a90c,
  title = {Operant conditioning and vision training.},
  author = {S Groffman},
  year = {1969},
  doi = {10.1097/00006324-196908000-00004},
  url = {https://pubmed.ncbi.nlm.nih.gov/5257919/},
  note = {Source identifier: 5257919}
}