@techreport{weko_34853_1,
   author	 = "岸上順一",
   title	 = "デジタルコンテンツにおける著作権の技術的保護に関して",
   year 	 = "2001",
   institution	 = "NTT",
   number	 = "59(2001-DPS-103)",
   month	 = "jun"
}