@article {Maa:1987:0736-2935:1411, title = "A study of frequency characteristic of the tapping-form reference noise source", journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings", parent_itemid = "infobike://ince/incecp", publishercode ="ince", year = "1987", volume = "1987", number = "3", publication date ="1987-09-15T00:00:00", pages = "1411-1414", itemtype = "ARTICLE", issn = "0736-2935", url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/1987/00001987/00000003/art00044", keyword = "51.5, 74.8", author = "Maa, Tie-ding", abstract = "", }