@misc{indiciae6f7970bb4027,
  title = {Letter: Dose error due to a mercury shutter.},
  author = {P Goulet and R O Kornelsen},
  year = {1975},
  doi = {10.1259/0007-1285-48-570-501},
  url = {https://pubmed.ncbi.nlm.nih.gov/1227708/},
  note = {Source identifier: 1227708}
}