Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 安野 功修,Advancements of acoustic appliances. Super minaiturization of microphones for portable telephone machines.,The Journal of The Institute of Electrical Engineers of Japan,13405551,The Institute of Electrical Engineers of Japan,2002,122,12,823-825,https://cir.nii.ac.jp/crid/1390001204662112640,https://doi.org/10.1541/ieejjournal.122.823