@article {Czarnecki:1981:0736-2935:951,
title = "Application of a gradient method for approximate estimation of a sound source directivity in situ",
journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings",
parent_itemid = "infobike://ince/incecp",
publishercode ="ince",
year = "1981",
volume = "1981",
number = "2",
publication date ="1981-10-06T00:00:00",
pages = "951-954",
itemtype = "ARTICLE",
issn = "0736-2935",
url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1981/00001981/00000002/art00007",
keyword = "72, 23.8",
author = "Czarnecki, Stefan and Engel, Zbigniew and Panuszka, Ryszard and Gawlik, Aleksander",
abstract = "",
}