@article {Gibson:1973:0736-2935:445, title = "Non-engine aerodynamic noise: The limit to aircraft noise reduction", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1973", volume = "1973", number = "2", publication date ="1973-08-22T00:00:00", pages = "445-454", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1973/00001973/00000002/art00069", keyword = "13.1, 21.6", author = "Gibson, John S.", abstract = "", }