@inproceedings{ICDAR-2007-ZhangL,
	author        = "W. Zhang and W. Liu",
	booktitle     = "{Proceedings of the Ninth International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.2007.27",
	isbn          = "978-0-7695-2822-9",
	pages         = "536--540",
	publisher     = "{IEEE Computer Society}",
	title         = "{A New Vectorial Signature for Quick Symbol Indexing, Filtering and Recognition}",
	year          = 2007,
}