@article {Ng:1979:0736-2935:321, title = "Noise characteristics of control valves", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1979", volume = "1979", number = "1", publication date ="1979-04-30T00:00:00", pages = "321-326", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1979/00001979/00000001/art00040", keyword = "21.6.5, 11.3.1", author = "Ng, Kam W.", abstract = "", }