@misc{indiciaee98066358436,
  title = {Help.},
  author = {G du Boulay},
  year = {1973},
  doi = {10.1259/0007-1285-46-550-783},
  url = {https://pubmed.ncbi.nlm.nih.gov/4753728/},
  note = {Source identifier: 4753728}
}