Everett, Randy L.; Iverson, Brian D.; Broome, Scott Thomas; Siegel, Nathan Phillip & Bronowski, David R. Temperature-dependent mechanical property testing of nitrate thermal storage salts., report, September 1, 2010; (https://digital.library.unt.edu/ark:/67531/metadc1015365/m1/1/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .