Neptunium-237 content of E-metal, report, October 10, 1961; (https://digital.library.unt.edu/ark:/67531/metadc1386294/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Neptunium-237 content of E-metal, report, October 10, 1961; (https://digital.library.unt.edu/ark:/67531/metadc1386294/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .