@article {Smith:1980:0736-2935:1187, title = "The impact and future direction of aircraft noise certification", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1980", volume = "1980", number = "1", publication date ="1980-12-08T00:00:00", pages = "1187-1190", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1980/00001980/00000001/art00052", keyword = "82, 13.1", author = "Smith, M.J.T.", abstract = "", }