Syvertson, Clarence A.; Gloria, Hermilo R. & Sarabia, Michael F. Aerodynamic Performance and Static Stability and Control of Flat-Top Hypersonic Gliders at Mach Numbers From 0.6 to 18, report, September 17, 1958; (https://digital.library.unt.edu/ark:/67531/metadc64409/m1/1/: accessed January 22, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .