Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ogawa Hiroaki,Insurance Economy of Social Insurance,經濟學研究,0022975X,"Society of Political Economy, Kyushu University",1996-12-10,63,3,25-43,https://cir.nii.ac.jp/crid/1390009683039517696,https://doi.org/10.15017/4494323