@inproceedings{ICDAR-1993-HoB,
	author        = "Tin Kam Ho and Henry S. Baird",
	booktitle     = "{Proceedings of the Second International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.1993.395665",
	isbn          = "0-8186-4960-7",
	pages         = "593--597",
	publisher     = "{IEEE}",
	title         = "{Perfect metrics}",
	year          = 1993,
}