@misc{indiciaeb14b9de675c1,
  title = {Changes in calibration standards for quantitative computed tomography: recommendations for clinical practice.},
  author = {C C Glüer and K Engelke and M Jergas and S Hagiwara and S Grampp and H K Genant},
  year = {1993},
  doi = {10.1007/bf01623835},
  url = {https://pubmed.ncbi.nlm.nih.gov/8400613/},
  note = {Source identifier: 8400613}
}