@misc{1148886,
  author = {P D Higgins and F H Attix and J H Hubbell and S M Seltzer and M J Berger and C H Sibata},
  title = {Mass energy-transfer and mass energy-absorption coefficients, including in-flight positron annihilation for photon energies 1 keV to 100 MeV:},
  year = {1991},
  month = {1991-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.4680},
  language = {en},
}