@article {Ingard:1974:0093-9978:37,
title = "Physical Principles of Noise Reduction: Properties of Sound Sources and Their Fields",
journal = "Noise Control Engineering",
parent_itemid = "infobike://ince/nce",
publishercode ="ince",
year = "1974",
volume = "2",
number = "1",
publication date ="1974-01-01T00:00:00",
pages = "37-48",
itemtype = "ARTICLE",
issn = "0093-9978",
url = "https://ince.publisher.ingentaconnect.com/content/ince/nce/1974/00000002/00000001/art00006",
doi = "doi:10.3397/1.2831955",
author = "Ingard, K. Uno and Maling, Jr., George C.",
abstract = "",
}