Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HUBBELL J. H.,"Tables of X-Ray Mass Attenuation Coefficients and Mass Energy-Absorption Coefficients, NIST Physical Reference Data",http://physics.nist.gov/PhysRefData/XrayMassCoef/cover.html,,,,,,,https://cir.nii.ac.jp/crid/1570572700923622144,