@inproceedings{ICDAR-2007-GuoHLJ,
	author        = "Yu-sheng Guo and Lai Huang and Chang-ping Liu and Xin Jiang",
	booktitle     = "{Proceedings of the Ninth International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.2007.47",
	isbn          = "978-0-7695-2822-9",
	pages         = "719--723",
	publisher     = "{IEEE Computer Society}",
	title         = "{An Automatic Mathematical Expression Understanding System}",
	year          = 2007,
}