Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yokoo Masanori,Contribution Cycles and Preferable Incentive Schemes,岡山大学経済学会雑誌,0386-3069,岡山大学経済学会,2004-09-10,36,2,35-48,https://cir.nii.ac.jp/crid/1390290699574302080,https://doi.org/10.18926/oer/40527