@article {Dobrzynski:1989:0736-2935:255, title = "Unsymmetrical blade-spacing propeller noise reduction without performance penalty", 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 = "255-258", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1989/00001989/00000003/art00040", keyword = "21.6.2, 13.1.5", author = "Dobrzynski, W.", abstract = "", }