@inproceedings{ICDAR-2007-HiranoOOY,
	author        = "Takashi Hirano and Yuichi Okano and Yasuhiro Okada and Fumio Yoda",
	booktitle     = "{Proceedings of the Ninth International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.2007.242",
	isbn          = "978-0-7695-2822-9",
	pages         = "262--266",
	publisher     = "{IEEE Computer Society}",
	title         = "{Text and Layout Information Extraction from Document Files of Various Formats Based on the Analysis of Page Description Language}",
	year          = 2007,
}