求下面几篇论文，请好心人上传，非常感谢
(1)J. W. SULLIVAN 1979 Journal of the Acoustical Society of America 66, 772}788. A method of modelling perforated tube muffler components: I. Theory; II. Applications(2)J. KERGOMARD, A. KHETTABI and X. MOUTON 1994 Acta Acoustica 2, 1}16. Propagation of acoustic waves in two waveguides coupled by perforations: I. Theory.
(3)J.W. Sullivan, M.J. Crocker, Analysis of concentric-tube resonators having unpartitioned cavities, Journal of the
Acoustical Society of America 64 (1978) 207–215.
(4)M.L. Munjal, K.N. Rao, A.D. Sahasrabudhe, Aeroacoustic analysis of perforated muffler components, Journal of
Sound and Vibration 114 (1987) 173–188.
(5)K.S. Peat, A numerical decoupling analysis of perforated pipe silencer elements, Journal of Sound and Vibration
128 (1988) 199–212.
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