@article{weko_145069_1,
   author	 = "山口,通智 and 岡本,健 and 菊池,浩明",
   title	 = "機械合成文の不自然度相対識別問題に基づくCAPTCHAの提案",
   journal	 = "情報処理学会論文誌",
   year 	 = "2015",
   volume	 = "56",
   number	 = "9",
   pages	 = "1834--1845",
   month	 = "sep"
}