@inproceedings{ICDAR-2005-CostagliolaDR,
	author        = "Gennaro Costagliola and Vincenzo Deufemia and Michele Risi",
	booktitle     = "{Proceedings of the Eighth International Conference on Document Analysis and Recognition}",
	doi           = "10.1109/ICDAR.2005.218",
	isbn          = "0-7695-2420-6",
	pages         = "1226--1231",
	publisher     = "{IEEE Computer Society}",
	title         = "{Sketch Grammars: A Formalism for Describing and Recognizing Diagrammatic Sketch Languages}",
	year          = 2005,
}