http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Review of data and methods recommended in the international code of practice for dosimetry IAEA Technical Reports Series no.381: The use of plane parallel ionization chambers in high energy electron and photon beams
"Final report of the Co-ordinated Research Project on Dose determination with plane parallel ionization chambers in therapeutic electron and photon beams"