@article {Fry:1990:0736-2935:1239,
title = "Speakers for active noise control",
journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings",
parent_itemid = "infobike://ince/incecp",
publishercode ="ince",
year = "1990",
volume = "1990",
number = "3",
publication date ="1990-08-13T00:00:00",
pages = "1239-1242",
itemtype = "ARTICLE",
issn = "0736-2935",
url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1990/00001990/00000003/art00081",
keyword = "71.1.4, 38.2",
author = "Fry, A.T. and Fryer, P.A.",
abstract = "",
}