@misc{indiciaec74422406e9b,
  title = {Systematical and statistical errors in using reference light sources to calibrate TLD readers.},
  author = {B Burgkhardt and E Piesch},
  year = {1981},
  doi = {10.1097/00004032-198104000-00013},
  url = {https://pubmed.ncbi.nlm.nih.gov/7228706/},
  note = {Source identifier: 7228706}
}