@inproceedings{CIKM-2015-KantereOKS,
	author        = "Verena Kantere and George Orfanoudakis and Anastasios Kementsietsidis and Timos K. Sellis",
	booktitle     = "{Proceedings of the 24th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2806416.2806529",
	isbn          = "978-1-4503-3794-6",
	pages         = "473--482",
	publisher     = "{ACM}",
	title         = "{Query Relaxation across Heterogeneous Data Sources}",
	year          = 2015,
}