Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ouchi Yasuhiro and Nakazawa Makoto and Yamasaki Yoshio,Analyzing sound field using the closely located four-microphone method with generalized harmonic analysis,THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN,03694232,Acoustical Society of Japan,2006,62,9,654-661,https://cir.nii.ac.jp/crid/1390001206566179712,https://doi.org/10.20697/jasj.62.9_654