On the stability of oscillations of an airplane wing, report, August 1923; (https://digital.library.unt.edu/ark:/67531/metadc277563/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
On the stability of oscillations of an airplane wing, report, August 1923; (https://digital.library.unt.edu/ark:/67531/metadc277563/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .