@misc{indiciaee82433321423,
  title = {Deriving opera from operation.},
  author = {R Magee},
  year = {1999},
  doi = {10.1046/j.1440-1622.1999.01662.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/10515343/},
  note = {Source identifier: 10515343}
}