@techreport{weko_58458_1, author = "井上,彰 and 斎藤,直哉", title = "デジタルコンテンツのノン・パッケージ流通と著作権の保護", year = "1998", institution = "(株)エム研, (株)エム研", number = "85(1998-EIP-002)", month = "sep" }