@inproceedings{ICDAR-1997-ZhaoLZPT,
	author        = "Xuejun Zhao and Xinyu Liu and Shengling Zheng and Baochang Pan and Yuan Yan Tang",
	booktitle     = "{Proceedings of the Fourth International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.1997.620585",
	isbn          = "0-8186-7898-4",
	pages         = "645--648",
	publisher     = "{IEEE Computer Society}",
	title         = "{On-line recognition handwritten mathematical symbol}",
	year          = 1997,
}