[Reports] / Amer.inst.of aeronautics and astronautics. N 90-4004 : measurement of sonic boom waveforms and propagation characteristics:techniques and challenges : Rep.presented at AIAA 13th aeroacoustics conf.,Oct.22-24, 1990, Tallahassee(Fl) / A.J.(jr.)Bedard, 1990. - 9 p. - Текст : непосредственный.