Fillmore, F. L. NEUTRON LEAKAGE FROM THE 30 MEGAWATT SGR-P4 REACTOR, report, August 21, 1953; (https://digital.library.unt.edu/ark:/67531/metadc1022890/m1/1/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .