@inproceedings{KDD-2009-KoopmanS,
	author        = "Arne Koopman and Arno Siebes",
	booktitle     = "{Proceedings of the 15th International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/1557019.1557071",
	isbn          = "978-1-60558-495-9",
	pages         = "437--446",
	publisher     = "{ACM}",
	title         = "{Characteristic relational patterns}",
	year          = 2009,
}