@inproceedings{CIKM-2011-GhionnaGS,
	author        = "Lucantonio Ghionna and Gianluigi Greco and Francesco Scarcello",
	booktitle     = "{Proceedings of the 20th ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2063576.2064023",
	isbn          = "978-1-4503-0717-8",
	pages         = "2573--2576",
	publisher     = "{ACM}",
	title         = "{H-DB: a hybrid quantitative-structural sql optimizer}",
	year          = 2011,
}