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  1. Quadrupole Corrections for the Permeable-Surface Ffowcs Williams–Hawkings Equation

    Article • AIAA Journal, July 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Shunji ENOMOTO, Kazuhisa Amemiya, Kazuomi Yamamoto

  2. The Frequency-Domain Formulations of the Quadrupole Correction for the Ffowcs Williams-Hawkings Integration

    Article • May 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Kazuhisa Amemiya, Kazuomi Yamamoto