@misc{1201031,
  author = {Stephen Seltzer},
  title = {Calculations of fluence rates of unscattered x- and gamma-ray photons emerging from model spheres of special nuclear material:},
  year = {2009},
  month = {2009-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.7557},
  language = {en},
}