@misc{136236,
  author = {P Lamperti and M O'brien},
  title = {Calibration of X-Ray and Gamma-Ray Measuring Instruments},
  year = {2001},
  month = {2001-01-01},
  publisher = {- 250-58, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.250-58},
  language = {en},
}