@article{VLDB-2009-KabischDYL,
	author        = "Thomas Kabisch and Eduard Constantin Dragut and Clement T. Yu and Ulf Leser",
	ee            = "http://www.vldb.org/pvldb/2/vldb09-360.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 1,
	pages         = "325--336",
	title         = "{A Hierarchical Approach to Model Web Query Interfaces for Web Source Integration}",
	volume        = 2,
	year          = 2009,
}