@inproceedings{STOC-1997-KhannaSW,
	author        = "Sanjeev Khanna and Madhu Sudan and David P. Williamson",
	booktitle     = "{Proceedings of the 29th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/258533.258538",
	isbn          = "0-89791-888-6",
	pages         = "11--20",
	publisher     = "{ACM}",
	title         = "{A Complete Classification of the Approximability of Maximization Problems Derived from Boolean Constraint Satisfaction}",
	year          = 1997,
}