@misc{indiciae5d63cdaca458,
  title = {Letter: Electron back-scattering from lead in a perspex phantom.},
  author = {F Nüsslin},
  year = {1975},
  doi = {10.1259/0007-1285-48-576-1041},
  url = {https://pubmed.ncbi.nlm.nih.gov/814946/},
  note = {Source identifier: 814946}
}