Back, Paul S.; Barnhart, Brady V.; Walters, Ronald R.; Haws, Lowell D. & Collins, Louis W. Test results of chemical reactivity test (CRT) analysis of structural materials and explosives, report, March 21, 1980; (https://digital.library.unt.edu/ark:/67531/metadc669411/m1/1/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .