Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ITAMOTO Morimasa and SHIOKAWA Hiroyoshi,Determination of Sound Power Levels for Ducted Fans,"Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan",0385275X,"The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan",2000,25,76,51-58,https://cir.nii.ac.jp/crid/1390282681523291264,https://doi.org/10.18948/shase.25.76_51