Becker, G.; Connolly, M. & McIlwain, M. Transuranic and Low-Level Boxed Waste Form Nondestructive Assay Technology Overview and Assessment, report, February 1, 1999; (https://digital.library.unt.edu/ark:/67531/metadc697197/m1/1/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .