@inproceedings{SAC-2002-BistarelliFM,
	author        = "Stefano Bistarelli and Thom W. Frühwirth and Michael Marte",
	booktitle     = "{Proceedings of the 17th Symposium on Applied Computing}",
	doi           = "10.1145/508791.508793",
	pages         = "1--5",
	publisher     = "{ACM}",
	title         = "{Soft constraint propagation and solving in CHRs}",
	year          = 2002,
}