著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Nakayama, Yuji",Opening a direct digital channel : the impact of versioning on the physical product market with heterogeneous retailers,,"School of Economics, Osaka Prefecture University",2013,Discussion paper new series,,,,https://cir.nii.ac.jp/crid/1130282269833010560