Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) WATANABE Seiji and YANAGIMOTO Kensaku and TANIFUJI Katsuya and SAKAMOTO Syuhichi and ITOH Takahiro and ICHIMIYA Ryohichi,Sound Radiation from Ventilation Aperture with Circular Thin Air Layer Setting up Machinery Wall. Noise Attenuation by Using Active Noise Sources.,TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C,03875024,The Japan Society of Mechanical Engineers,2002,68,674,3122-3129,https://cir.nii.ac.jp/crid/1390001206356672384,https://doi.org/10.1299/kikaic.68.3122