Strass, H. Kurt & Stephens, Emily W. An engineering method for the determination of aeroelastic effects upon the rolling effectiveness of ailerons on swept wings, report, November 30, 1953; (https://digital.library.unt.edu/ark:/67531/metadc59770/m1/1/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .