@article{weko_12276_1,
   author	 = "Jien,Kato and Toyohide,Watanabe and Hiroyuki,Hase and Takeshi,Nakayama",
   title	 = "Understanding Illustrations of Origami Drill Books",
   journal	 = "情報処理学会論文誌",
   year 	 = "2000",
   volume	 = "41",
   number	 = "6",
   pages	 = "1857--1873",
   month	 = "jun"
}