@misc{indiciaee43f614bcd76,
  title = {Letter: Three "reciprocal" approaches.},
  author = {A Hindin and R B Kielich and C J Gronner},
  year = {1974},
  doi = {10.14219/jada.archive.1974.0083},
  url = {https://pubmed.ncbi.nlm.nih.gov/4520310/},
  note = {Source identifier: 4520310}
}