@inproceedings{STOC-1989-FellowsL,
	author        = "Michael R. Fellows and Michael A. Langston",
	booktitle     = "{Proceedings of the 21st Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/73007.73055",
	isbn          = "0-89791-307-8",
	pages         = "501--512",
	publisher     = "{ACM}",
	title         = "{On Search, Decision and the Efficiency of Polynomial-Time Algorithms}",
	year          = 1989,
}