Tomazic, William A. & Rothenberg, Edward A. Experimental rocket performance with 15 percent fluorine - 85 percent oxygen and JP4, report, August 29, 1955; (https://digital.library.unt.edu/ark:/67531/metadc61339/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .