@article {Legouis:1991:0736-2935:431, title = "Acoustic behaviour of a rigidly backed inhomogeneous porous layer", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1991", volume = "1991", number = "5", publication date ="1991-12-02T00:00:00", pages = "431-434", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1991/00001991/00000005/art00098", keyword = "35.1, 24.8", author = "Legouis, T. and Nicolas, J.", abstract = "", }