@article {Tian:1987:0736-2935:553, title = "Secondary sources of a spatial active noise attenuator", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1987", volume = "1987", number = "5", publication date ="1987-09-15T00:00:00", pages = "553-556", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1987/00001987/00000005/art00032", keyword = "38.2, 71.1.4", author = "Tian, Jing and Sha, Jiazheng", abstract = "", }