@article {Kaiser:1989:0736-2935:157, title = "Variable speed blowers - A solution to control the noise of computers", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1989", volume = "1989", number = "3", publication date ="1989-12-04T00:00:00", pages = "157-162", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1989/00001989/00000003/art00021", keyword = "12.3, 11.4.1", author = "Kaiser, Lutz and Wohrle, Kurt", abstract = "", }