Tysl, Edward R.; Klapproth, John F. & Hartmann, Melvin J. Investigation of a supersonic-compressor rotor with turning to axial direction 1: rotor design and performance, report, August 19, 1953; (https://digital.library.unt.edu/ark:/67531/metadc59747/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .