@article{weko_66461_1, author = "山本,匠 and 漁田,武雄 and 西垣,正勝", title = "不鮮明化画像を利用した暗示・応答型画像認証方式の提案", journal = "情報処理学会論文誌", year = "2009", volume = "50", number = "9", pages = "2062--2076", month = "sep" }