@inproceedings{PPDP-2005-GuoJGL,
	author        = "Hai-Feng Guo and Bharat Jayaraman and Gopal Gupta and Miao Liu",
	booktitle     = "{Proceedings of the Seventh International Conference on Principles and Practice of Declarative Programming}",
	doi           = "10.1145/1069774.1069797",
	isbn          = "1-59593-090-6",
	pages         = "242--251",
	publisher     = "{ACM}",
	title         = "{Optimization with mode-directed preferences}",
	year          = 2005,
}