Mihalczo, John T & Mullens, James Allen. NMIS with Imaging and Gamma Ray Spectrometry for Pu, HEU, HE and Other Materials, report, March 1, 2012; (https://digital.library.unt.edu/ark:/67531/metadc847169/m1/1/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .