Fission cross sections of some thorium, uranium, neptunium and plutonium isotopes relative to /sup 235/U, report, October 1, 1983; (https://digital.library.unt.edu/ark:/67531/metadc1093928/m1/1/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .