@misc{indiciae13f11cf6b8b6,
  title = {Modified ion-source cage for a clinical mass spectrometer.},
  author = {P Beatty and W Greer and B Kay},
  year = {1981},
  doi = {10.1007/bf02441339},
  url = {https://pubmed.ncbi.nlm.nih.gov/6799711/},
  note = {Source identifier: 6799711}
}