@inproceedings{weko_111755_1,
   author	 = "鶴田裕輔 and 高谷眞弓 and 山村明弘",
   title	 = "スマートフォン上の利用に適したCAPTCHA",
   booktitle	 = "第75回全国大会講演論文集",
   year 	 = "2013",
   volume	 = "2013",
   number	 = "1",
   pages	 = "563--564",
   month	 = "mar"
}