@inproceedings{DocEng-2013-AlvaroZ,
	author        = "Francisco Alvaro and Richard Zanibbi",
	booktitle     = "{Proceedings of the 13th Symposium on Document Engineering}",
	doi           = "10.1145/2494266.2494315",
	isbn          = "978-1-4503-1789-4",
	pages         = "123--126",
	publisher     = "{ACM}",
	title         = "{A shape-based layout descriptor for classifying spatial relationships in handwritten math}",
	year          = 2013,
}