Eggleston, John M. & Diederich, Franklin W. Theoretical calculation of the power spectra of the rolling and yawing moments on a wing in random turbulence, report, September 6, 1956; (https://digital.library.unt.edu/ark:/67531/metadc60721/m1/1/: accessed April 18, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .