@article{VLDB-2012-WenzelEMK,
	author        = "Florian Wenzel and Markus Endres and Stefan Mandl and Werner Kießling",
	ee            = "http://vldb.org/pvldb/vol5/p1946_florianwenzel_vldb2012.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 12,
	pages         = "1946--1949",
	title         = "{Complex Preference Queries Supporting Spatial Applications for User Groups}",
	volume        = 5,
	year          = 2012,
}