Cicero-Herman, C.A.; Workman, P.; Poole, K.; Erich, D. & Harden, J. Commercial Ion Exchange Resin Vitrification in Borosilicate Glass, article, May 1, 1998; (https://digital.library.unt.edu/ark:/67531/metadc712281/m1/1/: accessed November 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .