@inproceedings{LOPSTR-2009-CzenkoE,
	author        = "Marcin Czenko and Sandro Etalle",
	booktitle     = "{Revised Selected Papers of the 19th International Symposium on Logic-Based Program Synthesis and Transformation}",
	doi           = "10.1007/978-3-642-12592-8_6",
	isbn          = "978-3-642-12591-1",
	pages         = "67--81",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{LP with Flexible Grouping and Aggregates Using Modes}",
	volume        = 6037,
	year          = 2009,
}