@misc{136411,
  author = {J Hubbell},
  title = {Bibliography of Photon Total Cross Section (Attenuation Coefficient) Measurements 10 eV to 13.5 GeV, 1907-1993},
  year = {1994},
  month = {1994-01-01},
  publisher = {http://physics.nist.gov/PhysRefData/photoncs/html/attencoef.html},
  language = {en},
}