文 【 表示 / 非表示 】Does Vertical Integration Facilitate Upstrema Collusion? An Empirical Study,西脇雅人,European Association for Research in Industrial Economics Annual Conference ,2018年08月,国際会議(proceedingsなし)Does Vertical Integration Facilitate Upstrema Collusion? An Empirical Study,西脇雅人,Econometric Society Asian Meeting ,2018年06月,国際会議(proceedingsなし)