@inproceedings{ICDAR-1997-RochaB,
	author        = "Jairo Rocha and Rafael Bernardino",
	booktitle     = "{Proceedings of the Fourth International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.1997.620623",
	isbn          = "0-8186-7898-4",
	pages         = "809--812",
	publisher     = "{IEEE Computer Society}",
	title         = "{Singularities and Regularities on Line Pictures via Symmetrical Trapezoids}",
	year          = 1997,
}