Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "シオザワ, ケンイチ",An Analysis of the Referendum on the Osaka Metropolis Plan : Why Did Voter Turnout Rise and Why was Opinion Equally Divided?,中央大学社会科学研究所年報,1343-2125,中央大学社会科学研究所,2017-09-30,21,,43-68,https://cir.nii.ac.jp/crid/1050282677683729408,