@article{ICLP-J-2014-GelfondZ,
	author        = "Michael Gelfond and Yuanlin Zhang",
	doi           = "10.1017/S1471068414000222",
	journal       = "{Theory and Practice of Logic Programming}",
	number        = "4-5",
	pages         = "587--601",
	title         = "{Vicious Circle Principle and Logic Programs with Aggregates}",
	volume        = 14,
	year          = 2014,
}