Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yasui Toshiyuki,Optimal Design of Insurance Products by Systems Approach : Case Study of Participatory Systems Analysis for Value-Co-Creation-Based Service Provider-Receiver Relations,Journal of Household Economics,13417347,The Japan Society of Household Economics,2012,35,0,51-67,https://cir.nii.ac.jp/crid/1390001205768903296,https://doi.org/10.18961/seikatsukeizaigaku.35.0_51