@inproceedings{ICPR-1998-MaioM,
	author        = "Dario Maio and Davide Maltoni",
	booktitle     = "{Proceedings of the 14th International Conference on Pattern Recognition}",
	doi           = "10.1109/ICPR.1998.711198",
	isbn          = "0-8186-8512-3",
	pages         = "534--538",
	publisher     = "{IEEE Computer Society}",
	title         = "{Ridge-line density estimation in digital images}",
	year          = 1998,
}