[Reports] / Amer.inst.of aeronautics and astronautics. N 89-2091 : Influence of mechanical nonlinearties on flutter : analystical and computational aspects;Rep. presented at the AIAA/AHS/ASEE aircraft design, systems a. operations conf., July 31 - Aug.2, 1989, Seattle(Wa) / G.Becus,C.Petiau,P.Nicot, 1989. - 5 p. - Текст : непосредственный.