@misc{indiciaea7afc6375cb7,
  title = {Letter: Information retrieval system.},
  author = {C H Altshuler and W N Hollister},
  year = {1976},
  doi = {10.1378/chest.69.1.136a},
  url = {https://pubmed.ncbi.nlm.nih.gov/1244276/},
  note = {Source identifier: 1244276}
}