@article {Cummings:1993:0736-2935:1025, title = "Sound attenuation in unlined ducts with flexible walls", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1993", volume = "1993", number = "5", publication date ="1993-08-24T00:00:00", pages = "1025-1028", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1993/00001993/00000005/art00098", keyword = "26.1.4, 51.6", author = "Cummings, A.", abstract = "", }