Napier, B. A. & Simpson, J. C. Determination of the temporal resolution required for the HEDR dose code, report, December 1, 1992; (https://digital.library.unt.edu/ark:/67531/metadc1188076/m1/1/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .