Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Emura Norio and Sawayama Koji and Miura Masanobu and Yanagida Masuzo,A system yielding the optimal chord-form sequence on the guitar,THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN,03694232,Acoustical Society of Japan,2008,64,2,73-83,https://cir.nii.ac.jp/crid/1390001206567227136,https://doi.org/10.20697/jasj.64.2_73