Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Shioda Masazumi and Ochiai Hiroaki,The Case Study for the Approach of the Low Frequency Noise Problems Generated by the Outdoor-Room Air-Conditioners,The Journal of the INCE of Japan,03868761,The Institutew of Noise Control Engineering of Japan,2008-04-01,32,2,138-145,https://cir.nii.ac.jp/crid/1390846609800086528,https://doi.org/10.11372/souonseigyo.32.2_138