@inproceedings{ICDAR-1997-KatoWN,
	author        = "Jien Kato and Toyohide Watanabe and Takeshi Nakayama",
	booktitle     = "{Proceedings of the Fourth International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.1997.619818",
	isbn          = "0-8186-7898-4",
	pages         = "81--85",
	publisher     = "{IEEE Computer Society}",
	title         = "{Recognition of Essential Folding Operations: A Step for Interpreting Illustrated Books of Origami}",
	year          = 1997,
}